Academic article

• Lehmann, Sjur; Baghestan, Elham; Børdahl, Per E et al. (2020). Low risk pregnancies after a cesarean section: Determinants of trial of labor and its failure. (external link)
• Eriksen, Helene Sofie; Høy, Susanne; Irgens, Lorentz et al. (2020). Social inequalities in the provision of obstetric services in Norway 1967-2009: A population-based cohort study. (external link)
• Lehmann, Sjur; Baghestan, Elham; Børdahl, Per E et al. (2019). Trial of labor after cesarean section in risk pregnancies: A population-based cohort study. (external link)
• Lehmann, Sjur; Baghestan, Elham; Børdahl, Per E et al. (2018). Perinatal outcome in births after a previous cesarean section at high trial of labor rates. (external link)
• Lehmann, Sjur; Baghestan, Elham; Børdahl, Per E et al. (2017). Validation of data in the Medical Birth Registry of Norway on delivery after a previous cesarean section. (external link)
• Rasmussen, Svein; Ebbing, Cathrine; Irgens, Lorentz M. (2017). Predicting preeclampsia from a history of preterm birth. (external link)
• Ebbing, Cathrine; Rasmussen, Svein; Skjaerven, Rolv et al. (2017). Risk factors for recurrence of hypertensive disorders of pregnancy, a population-based cohort study. (external link)
• Kristensen, Petter; Keyes, Katherine M.; Susser, Ezra et al. (2017). High birth weight and perinatal mortality among siblings: A register based study in Norway, 1967-2011. (external link)
• Irgens, Lorentz M. (2017). Medisinsk f?dselsregisters f?dsel og senere vekst; noen observasjoner og refleksjoner fra hornet p? veggen. (external link)
• Yoshida, Sachiyo; Martines, Jose Carlos; Lawn, Joy E. et al. (2016). Setting research priorities to improve global newborn health and prevent stillbirths by 2025. (external link)
• Irgens, Ågot; Grønning, Marit; Irgens, Lorentz M. (2016). Pregnancy outcome in partners of male professional divers in Norway. (external link)
• Oftedal, Anne Marie; Busterud, Kari; Irgens, Lorentz M. et al. (2016). Socio-economic risk factors for preterm birth in Norway 1999-2009. (external link)
• Halvorsen, Maren-Kristin; Langeland, Eva; Almenning, Grethe et al. (2015). Amming kartlagt ved rutinedata. (external link)
• Irgens, Lorentz M. (2015). The roots of Norwegian epidemiology – Norwegian epidemiology in the 19th century. (external link)
• Nes, Ragnhild Bang; Hauge, Lars Johan; Kornstad, Tom et al. (2015). Maternal work absence: a longitudinal study of language impairment and behavior problems in preschool children. (external link)
• Hauge, Lars Johan; Nes, Ragnhild Bang; Kornstad, Tom et al. (2015). Maternal sick leave due to psychiatric disorders following the birth of a child with special health care needs. (external link)
• Taruscio, Domenica; Arriola, Larraitz; Baldi, Francesca et al. (2014). European recommendations for primary prevention of congenital anomalies: A joined effort of EUROCAT and EUROPLAN projects to facilitate inclusion of this topic in the national rare disease plans. (external link)
• Dahlseng, Magnus Odin; Andersen, Guro Lillemoen; Irgens, Lorentz M. et al. (2014). Risk of cerebral palsy in term-born singletons according to growth status at birth. (external link)
• Nes, Ragnhild Bang; Hauge, Lars Johan; Kornstad, Tom et al. (2014). The impact of child behaviour problems on maternal employment: a longitudinal cohort study. (external link)
• Hauge, Lars Johan; Kornstad, Tom; Nes, Ragnhild Bang et al. (2014). Employment Trends During Preschool Years Among Mothers of Term Singletons Born with Low Birth Weight. (external link)
• Kristensen, Petter; Susser, Ezra; Irgens, Lorentz M. et al. (2014). The association of high birth weight with intelligence in young adulthood: A cohort study of male siblings. (external link)
• Nes, Ragnhild Bang; Hauge, Lars Johan; Kornstad, Tom et al. (2014). The Impact of Child Behaviour Problems on Maternal Employment: A Longitudinal Cohort Study. (external link)
• Nes, Ragnhild Bang; Røysamb, Espen; Hauge, Lars Johan et al. (2014). Adaptation to the birth of a child with a congenital anomaly: A prospective longitudinal study of maternal well-being and psychological distress. (external link)
• Rasmussen, Svein; Irgens, Lorentz M.; Espinoza, J (2014). Maternal obesity and excess of fetal growth in pre-eclampsia . (external link)
• Irgens, Lorentz M. (2014). The background of the Norwegian Mother and Child Cohort Study. (external link)
• Eide, Martha Gunn; Moster, Dag; Irgens, Lorentz M. et al. (2013). Degree of fetal growth restriction associated with schizophrenia risk in a national cohort. (external link)
• Hauge, Lars Johan; Kornstad, Tom; Nes, Ragnhild Bang et al. (2013). The impact of a child's special health care needs on maternal work participation during early motherhood. (external link)
• Strand, Kristin Melheim; Heimstad, Runa Kristine; Iversen, Ann-Charlotte et al. (2013). Mediators of the association between pre-eclampsia and cerebral palsy: population based cohort study. (external link)
• Zeitlin, Jennifer; Szamotulska, Katarzyna; Drewniak, Nicolas et al. (2013). Preterm birth time trends in Europe: a study of 19 countries. (external link)
• Baghestan, Elham; Irgens, Lorentz M.; Børdahl, Per E et al. (2013). Familial risk of obstetric anal sphincter injuries: registry-based cohort study. (external link)
• Wallenius, Marianne; Skomsvoll, Johan Fredrik; Irgens, Lorentz M. et al. (2012). Parity in patients with chronic inflammatory arthritides childless at time of diagnosis. (external link)
• Baghestan, Elham; Irgens, Lorentz M.; Børdahl, Per E et al. (2012). Risk of recurrence and subsequent delivery after obstetric anal sphincter injuries. (external link)
• Stoknes, Magne; Andersen, Guro Lillemoen; Elkamil, Areej Ibrahim et al. (2012). The effects of multiple pre- and perinatal risk factors on the occurrence of cerebral palsy. A Norwegian register based study. (external link)
• Leversen, Katrine Tyborg; Sommerfelt, Kristian; Elgen, Irene Bircow et al. (2012). Prediction of outcome at 5 years from assessments at 2 years among extremely preterm children: A Norwegian national cohort study. (external link)
• Irgens, Lorentz M. (2012). The origin of registry-based medical research and care. (external link)
• Vikse, Bjørn Egil; Irgens, Lorentz M.; Karumanchi, S. Ananth et al. (2012). Familial Factors in the Association between Preeclampsia and Later ESRD. (external link)
• Stoknes, Magne; Andersen, Guro Lillemoen; Dahlseng, Magnus Odin et al. (2012). Cerebral Palsy and Neonatal Death in Term Singletons Born Small for Gestational Age. (external link)
• Melve, Kari Klungsøyr; Morken, Nils-Halvdan; Irgens, Lorentz M. et al. (2012). Secular trends in the epidemiology of pre-eclampsia throughout 40 years in Norway: prevalence, risk factors and perinatal survival. (external link)
• Skjaerven, Rolv; Wilcox, Allen J; Melve, Kari Klungsøyr et al. (2012). Cardiovascular mortality after pre-eclampsia in one child mothers: prospective, population based cohort study. (external link)
• Bouvier-Colle, M-H.; Mohangoo, Ashna D.; Gissler, Mika et al. (2012). What about the mothers? An analysis of maternal mortality and morbidity in perinatal health surveillance systems in Europe. (external link)
• Wallenius, Marianne; Skomsvoll, Johan Fredrik; Irgens, Lorentz M. et al. (2011). Pregnancy and Delivery in Women With Chronic Inflammatory Arthritides With a Specific Focus on First Birth. (external link)
• Wallenius, Marianne; Skomsvoll, Johan Fredrik; Irgens, Lorentz M. et al. (2011). Fertility in women with chronic inflammatory arthritides. (external link)
• Leversen, Katrine Tyborg; Sommerfelt, Kristian; Rønnestad, Arild Erlend et al. (2011). Prediction of Neurodevelopmental and Sensory Outcome at 5 Years in Norwegian Children Born Extremely Preterm. (external link)
• Elkamil, Areej Ibrahim; Andersen, Guro Lillemoen; Salvesen, Kjell Å et al. (2011). Induction of labor and cerebral palsy: a population-based study in Norway. (external link)
• Mohangoo, Ashna D; Buitendijk, Simone; Szamotulska, Katarzyna et al. (2011). Gestational age patterns of fetal and neonatal mortality in Europe: results from the Euro-Peristat project. (external link)
• Høgberg, Vibecke; Rasmussen, Svein; Lie, Stein Atle et al. (2011). Placental abruption and premature rupture of membranes. (external link)
• Sandvik, Miriam Kristine; Iversen, Bjarne Magnus; Irgens, Lorentz M. et al. (2010). Are adverse pregnancy outcomes risk factors for development of end-stage renal disease in women with diabetes?. (external link)
• Melve, Kari Klungsøyr; Skjaerven, Rolv; Rasmussen, Svein et al. (2010). Recurrence of stillbirth in sibships: population-based cohort study. (external link)
• Leversen, Katrine Tyborg; Sommerfelt, Kristian; Rønnestad, Arild Erlend et al. (2010). Predicting neurosensory disabilities at two years of age in a national cohort of extremely premature infants. (external link)
• Wallenius, Marianne; Skomsvoll, Johan Fredrik; Irgens, Lorentz M et al. (2010). Postpartum onset of rheumatoid arthritis and other chronic arthritides: results from a patient register linked to a medical birth registry. (external link)
• Bjørstad, Astrid Rognebakke; Irgens-Hansen, Kaja; Daltveit, Anne Kjersti Nesje et al. (2010). Macrosomia: mode of delivery and pregnancy outcome. (external link)
• Hampson, Sarah E; Tonstad, Serena; Irgens, Lorentz M et al. (2010). Mothers' negative affectivity during pregnancy and food choices for their infants. (external link)
• Baghestan, Elham; Irgens, Lorentz M.; Børdahl, Per E et al. (2010). Trends in Risk Factors for Obstetric Anal Sphincter Injuries in Norway. (external link)
• Irgens, Lorentz M. (2010). The fight against leprosy in Norway in the 19th century. (external link)
• Langørgen, Jørund; Igland, Jannicke ; Vollset, Stein Emil et al. (2009). Short-term and long-term case fatality in 11 878 patients hospitalized with a first acute myocardial infarction, 1979-2001: the Western Norway cardiovascular registry. (external link)
• Rasmussen, Svein Arvid; Irgens, Lorentz M; Skjærven, Rolv et al. (2009). Prior adverse pregnancy outcome and the risk of stillbirth. (external link)
• Reisæter, Anna Varberg; Røislien, Jo; Henriksen, T et al. (2009). Pregnancy and birth after kidney donation: The Norwegian experience. (external link)
• Rasmussen, Svein; Irgens, Lorentz M. (2009). Occurrence of placental abruption in relatives. (external link)
• Wold, Siw-Helen Westby; Sommerfelt, Kristian; Reigstad, Hallvard et al. (2009). Neonatal mortality and morbidity in extremely preterm small for gestational age infants: a population based study. (external link)
• Andersen, Guro Lillemoen; Irgens, Lorentz M.; Skranes, Jon et al. (2009). Is breech presentation a risk factor for cerebral palsy? A Norwegian birth cohort study. (external link)
• Wallenius, Marianne; Skomsvoll, Johan Fredrik; Irgens, Lorentz M et al. (2009). Post Partum onset of Rheumatoid Arthritis and other chronic arthritides: Results from a patient register linked to a medical birth registry. (external link)
• Leoncini, Emanuele; Baranello, Giovanno; Orioli, Iêda M et al. (2008). Frequency of holoprosencephaly in the International Clearinghouse Birth Defects Surveillance systems: Searching for population variations. (external link)
• Gravseth, Hans Magne; Bjerkedal, Tor; Irgens, Lorentz M et al. (2008). Influence of physical, mental and intellectual development on disability in young Norwegian men. (external link)
• Tollånes, Mette; Rasmussen, Svein Arvid; Irgens, Lorentz M (2008). Caesarean section among relatives. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein Arvid; Thoresen, Steinar et al. (2008). Pregnancy outcome in women before and after cervical conisation: population based cohort study. (external link)
• Klungsøyr Melve, Kari; Lie, Rolv Terje; Skjærven, Rolv et al. (2008). Registration of Down syndrome in the Medical Birth Registry of Norway: Validity and time trends. (external link)
• Vikse, Bjørn Egil; Irgens, Lorentz M; Leivestad, Torbjørn et al. (2008). Preeclampsia and the risk of end-stage renal disease. (external link)
• Andersen, Guro L.; Irgens, Lorentz; Haagaas, Ivar et al. (2008). Cerebral palsy in Norway: Prevalence, subtypes and severity. (external link)
• Tollånes, Mette Christophersen; Moster, Dag; Daltveit, Anne Kjersti Nesje et al. (2008). Cesarean section and risk of severe childhood asthma: A population-based cohort study. (external link)
• Daltveit, Anne Kjersti Nesje; Tollånes, Mette Christophersen; Pihlstrøm, Hege et al. (2008). Cesarean delivery and subsequent pregnancies. (external link)
• Øyen, Nina; Nygård, Ottar; Igland, Jannicke et al. (2008). Sykehusinnleggelser for hjerte- og karsykdom i Helse Vest i perioden 1992-2001. (external link)
• Rasmussen, Svein Arvid; Irgens, Lorentz M (2008). History of fetal growth restriction is more strongly associated with severe rather than milder pregnancy-induced hypertension. (external link)
• Hallan, Stein; Euser, Anne M; Irgens, Lorentz M et al. (2008). Effect of intrauterine growth restriction on kidney function at young adult age: The Nord Trøndelag Health (HUNT 2) Study. (external link)
• Vikse, Bjørn Egil; Irgens, Lorentz M; Leivestad, Torbjørn et al. (2008). Low birth weight increases risk for end-stage renal disease. (external link)
• Kristensen, Petter; Bjerkedal, Tor; Irgens, Lorentz (2007). Early life determinants of musculoskeletal sickness absence in a cohort of Norwegians born in 1967-1976. (external link)
• Gravseth, Hans Magne Ulrik; Bjerkedal, Tor; Irgens, Lorentz M et al. (2007). Life course determinants for early disability pension: a follow-up of Norwegian men and women born 1967-1976. (external link)
• Lunde, Astrid; Klungsøyr Melve, Kari; Gjessing, Håkon K. et al. (2007). Genetic and environmental influences on birth weight, birth length, head circumference and gestational age using population based parent-offspring data. (external link)
• Høgberg, Vibecke; Rasmussen, Svein Arvid; Irgens, Lorentz M (2007). The effect of smoking and hypertensive disorders on abruptio placentae in Norway 1999-2002. (external link)
• Irgens, Lorentz (2007). Registerbasert epidemiologisk forskning og forvaltning – et resultat av tilfeldighetenes spill eller en uunngåelig historisk utvikling? Medisinsk fødselsregister gjennom 40 år. (external link)
• Rasmussen, Svein Arvid; Irgens, Lorentz M (2007). Pregnancy-induced hypertension in women who were born small. (external link)
• Lehmann, Sjur; Børdahl, Per E; Rasmussen, Svein Arvid et al. (2007). Norwegian midwives and doctors have increased cesarean section rates. (external link)
• Lehmann, Sjur; Børdahl, Per; Rasmussen, Svein et al. (2007). Norwegian midwives and doctors have increased cesarean section rates. (external link)
• Stene, Lars Christian; Eidem, Ingvild; Vangen, Siri et al. (2007). The validity of the diabetes mellitus diagnosis in the Medical Birth Registry of Norway. (external link)
• Tollånes, Mette Christophersen; Klungsøyr Melve, Kari; Irgens, Lorentz M et al. (2007). Reduced fertility after cesarean delivery - A maternal choice. (external link)
• Thompson, John M.D.; Irgens, Lorentz M; Skjærven, Rolv et al. (2007). Placenta weight percentile curves for singleton deliveries. (external link)
• Tollånes, Mette Christophersen; Thompson, John M.D.; Daltveit, Anne Kjersti et al. (2007). Cesarean section and maternal education; secular trends in Norway, 1967-2004. (external link)
• Nordby, Karl-Christian; Irgens, Lorentz; Kristensen, Petter (2006). Immunological exposures in Norwegian agriculture and pre-eclampsia. (external link)
• Eide, Martha Gunn; Skjærven, Rolv; Irgens, Lorentz et al. (2006). Associations of birth defects with adult intellectual performance, disability and mortality: Population-based cohort study. (external link)
• Rasmussen, Svein Arvid; Irgens, Lorentz M (2006). The effects of smoking and hypertensive disorders on fetal growth. (external link)
• Botto, Lorenzo D; Lisi, Alessandra; Bower, Carol et al. (2006). Trends of selected malformations in relation to folic acid recommendations and fortification: An international assessment. (external link)
• Rasmussen, Svein; Irgens, Lorentz (2006). The effects of smoking and hypertensive disorders on fetal growth. (external link)
• Kristensen, Petter; Bjerkedal, Tor; Irgens, Lorentz M (2006). Early life determinants of musculoskeletal sickness absence in a cohort of Norwegians born in 1967–1976. (external link)
• Magnus, Per; Irgens, Lorentz M; Haug, Kjell et al. (2006). Cohort profile: The Norwegian Mother and Child Cohort Study (MoBa). (external link)
• Thompson, John M. D. ; Irgens, Lorentz M; Rasmussen, Svein Arvid et al. (2006). Secular trends in socio-economic status and the implications for preterm birth. (external link)
• Vikse, Bjørn Egil; Irgens, Lorentz M; Bostad, Leif et al. (2006). Adverse perinatal outcome and later kidney biopsy in the mother. (external link)
• Mjøen, Geir; Sætre, Dag Ottar; Lie, Rolv Terje et al. (2006). Paternal occupational exposure to radiofrequency electromagnetic fields and risk of adverse pregnancy outcome. (external link)
• Basso, Olga; Rasmussen, Svein Arvid; Weinberg, Clarice R et al. (2006). Trends in fetal and infant survival following preeclampsia. (external link)
• Eide, Martha Gunn; Øyen, Nina; Skjærven, Rolv et al. (2005). Breech delivery and intelligence: A population-based study of 8,738 breech infants. (external link)
• Vollset, Stein Emil; Gjessing, Håkon K; Tandberg, Anne et al. (2005). Folate supplementation and twin pregnancies. (external link)
• Haga, Hans-Jacob; Gjesdal, Clara Gram; Irgens, Lorentz M et al. (2005). Reproduction and gynaecological manifestations in women with primary Sjögren’s syndrome: a case-control study. (external link)
• Haga, Hans-Jacob; Gjesdal, Clara Gram; Koksvik, Hege Svean et al. (2005). Pregnancy outcome in patients with Primary Sjögren's Syndrome. A Case-Control Study. (external link)
• Eide, Martha Gunn; Øyen, Nina; Skjærven, Rolv et al. (2005). Breech delivery and intelligence: A Population-Based Study of 8,738 breech infants. (external link)
• Botto, Lorenzo D; Lisi, Alessandra; Robert-Gnansia, Elisabeth et al. (2005). International retrospective cohort study of neural tube defects in relation to folic acid recommendations: are the recommendations working?. (external link)
• Trogstad, L; Stoltenberg, Camilla; Magnus, Per et al. (2005). Recurrence risk in hyperemesis gravidarum. (external link)
• Rønnestad, Arild; Abrahamsen, Tore G.; Medbø, Sverre et al. (2005). Late-Onset Septicemia in a Norwegian National Cohort of Extremely Premature Infants Receiving Very Early Full Human Milk Feeding. (external link)
• Markestad, Trond; Kaaresen, Per Ivar; Rønnestad, Arild et al. (2005). Norwegian Extreme Prematurity Study Group. Early death, morbidity, and need of treatment among extremely premature infants. (external link)
• Nordby, Karl-Christian; Andersen, Aage; Irgens, Lorentz M et al. (2005). Indicators of mancozeb exposure in relation to thyroid cancer and neural tube defects in farmers’ families. (external link)
• Skjærven, Rolv; Vatten, Lars J; Wilcox, AJ et al. (2005). Recurrence of pre-eclampsia across generations: exploring fetal and maternal genetic components in a population based cohort. (external link)
• Rønnestad, Arild; Abrahamsen, Tore G.; Medbø, Sverre et al. (2005). Septicemia in the First Week of Life in a Norwegian National Cohort of Extremely Premature Infants. (external link)
• Nafstad, Per; Samuelsen, Sven Ove; Irgens, Lorentz M et al. (2005). Svangerskapskomplikasjoner og risikoen for astma blant nordmenn født 1967-1993. (external link)
• Lisi, Alessandra; Botto, Lorenzo D; Rittler, Monica et al. (2005). Sex and Congenital Malformations: An International Perspective. (Erratum in: American Journal of Medical Genetics 2005;134A:463.). (external link)
• Nordby, Karl-Christian; Andersen, Aage; Irgens, Lorentz M. et al. (2005). Indicators of mancozeb exposure in relation to thyroid cancer and neural tube defects in farmers’ families. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Thoresen, Steinar Østerbø et al. (2005). Har conisering betydning for svangerskapsutfall?. (external link)
• Trogstad, Linn I; Stoltenberg, Camilla; Magnus, Per et al. (2005). Recurrence risk in hyperemesis gravidarum. (external link)
• Skjærven, Rolv; Vatten, Lars; Wilcox, Allen J. et al. (2005). Recurrence of pre-eclampsia across generations: exploring fetal and maternal genetic components in a popluation based cohort. (external link)
• Botto, L.D.; Lisi, A; Robert-Gnasia, E et al. (2005). International retrospective cohort study of neural tube defects in relation to folic acid recommendations: are the recommendations working?. (external link)
• Rønnestad, Arild; Abrahamsen, Tore G.; Medbø, Sverre et al. (2005). Late-Onset Septicemia in a Norwegian National Cohort of Extremely Premature Infants Receiving Very Early Full Human Milk Feeding. (external link)
• Kristensen, Petter; Bjerkedal, Tor; Irgens, Lorentz et al. (2005). Impact of life course determinants on work participation among young Norwegian men. (external link)
• Lisi, Alessandra; Botto, Lorenzo D.; Rittler, Monica et al. (2005). Sex and congenital malformations: An international perspective. (external link)
• Haga, Hans-Jacob; Gjesdal, Clara Gram; Irgens, Lorentz et al. (2005). Reproduction and gynaecological manifestations in women with primary Sjogren's syndrome: a case-control study. (external link)
• Markestad, Trond; Kaaresen, Per Ivar; Rønnestad, Arild et al. (2005). Early death, morbidity, and need of treatment among extremely premature infants. (external link)
• Nordby, Karl-Christian; Andersen, Aage; Irgens, Lorentz et al. (2005). Indicators of mancozeb exposure in relation to thyroid cancer and neural tube defects in farmers' families. (external link)
• Haga, Hans-Jacob; Gjesdal, Clara Gram; Koksvik, Hege Svean et al. (2005). Pregnancy outcome in patients with primary Sjögren's syndrome. A case-control study. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz (2004). Epidemiologisk forskning med utgangspunkt i Medisinsk fødselsregister. (external link)
• Haga, H. J.; Gjesdal, C. G.; Koksvik, H. S. et al. (2004). Pregnancy outcome in patients with primary Sjøgrens syndrome,. (external link)
• Irgens, Ågot; Irgens, Lorentz (2004). Secular trends in uncertain-sex births and proportion of male births in Norway, 1967-1998. (external link)
• Kristensen, Petter; Bjerkedal, Tor; Irgens, Lorentz (2004). Birthweight and work participation in adulthood. (external link)
• Carpenter, RG; Irgens, Lorentz; Blair, P et al. (2004). Sudden unexplained infant death in 20 regions in Europe: case control study. (external link)
• Hill, Stig A; Hjelmeland, B; Johannessen, Nic M et al. (2004). Changes in parental risk behaviour after an information campaign against sudden infant death syndrome (SIDS) in Norway. (external link)
• Kristensen, Petter; Bjerkedal, Tor; Irgens, LM (2004). Birthweight and work participation in adulthood. (external link)
• Kazaura, MR; Lie, RT; Irgens, LM et al. (2004). Increasing risk of gastroschisis in Norway: an age-period-cohort analysis. (external link)
• Kazaura, Method; Lie, Rolv Terje; Irgens, Lorentz et al. (2004). Increasing risk of gastroschisis in Norway: an age-period-cohort analysis. (external link)
• Kristensen, Petter; Irgens, Lorentz; Bjerkedal, Tor (2003). Impact of low birth weight on subsequent fertility: population based register study. (external link)
• Rasmussen, Svein; Irgens, Lorentz (2003). Fetal growth and body proportion in preeclampsia. (external link)
• Alm, B; Wennergen, G.; Norvenius, SG et al. (2003). Vitamin A and sudden infant death syndrome in Scandinavia 1992-1995. (external link)
• Rasmussen, Svein; Albrechtsen, Susanne; Irgens, Lorentz et al. (2003). Unexplained antepartum fetal death in Norway, 1985-97: diagnostic validation and some epidemiological aspects. (external link)
• Irgens, Ågot; Irgens, Lorentz; Reitan, Jon B et al. (2003). Pregnancy outcome among offspring of airline pilots and cabin attendants. (external link)
• Oldereid, Nan Birgitte; Åbyholm, Thomas; Tanbo, Tom et al. (2003). Medfødte misdannelser hos barn født etter assistert befruktning i Norge. (external link)
• Nafstad, Per; Samuelsen, Sven O; Irgens, Lorentz et al. (2003). Pregnancy complications and the risk of asthma among Norwegians born between 1967 and 1993. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz; Øyen, Nina et al. (2003). Circadian variations in sudden infant death syndrome: associations with maternal smoking, sleeping position and infections. The Nordic Epidemiological SIDS Study. (external link)
• Kristensen, Petter; Irgens, Lorentz; Bjerkedal, Tor (2003). Impact of low birth weight on subsequent fertility: population based register study. (external link)
• Rasmussen, Svein; Irgens, Lorentz (2003). Fetal growth and body proportion in preeclampsia. (external link)
• Nafstad, Per; Samuelsen, Sven O.; Irgens, Lorentz et al. (2003). Pregnancy complications and the risk of asthma among Norwegians born between 1967 and 1993. (external link)
• Alm, Bernt; Wennergren, Göran; Norvenius, S Gunnar et al. (2003). Vitamin A and sudden infant death syndrome in Scandinavia 1992-1995. (external link)
• Nafstad, P; Samuelsen, SO; Irgens, Lorentz et al. (2003). Pregnancy complications and the risk of asthma among Norwegians born between 1967 and 1993. (external link)
• Kristensen, Petter; Irgens, Lorentz; Bjerkedal, Tor (2003). Impact of low birth weight on subsequent fertility: population based register study. (external link)
• Rasmussen, Svein; Albrechtsen, Susanne; Irgens, Lorentz et al. (2003). Risk factors for unexplained antepartum fetal death in Norway 1967-1998. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz; Øyen, Nina et al. (2003). Circadian variations in sudden infant death syndrome: associations with maternal smoking, sleeping position and infections. The Nordic Epidemiological SIDS Study. (external link)
• Irgens, Lorentz (2002). Kvinnor som har haft preeklampsi löper ökad risk för hjärtkardöd. (external link)
• Alm, B; Wennergen, G.; Norvenius, SG et al. (2002). Breast feeding and the sudden infant death syndrome in Scandinavia 1992-1995. (external link)
• Egeland, Grace M.; Skjaerven, Rolv; Irgens, Lorentz (2002). The reproductive health of daughters of pregestational diabetic women: Medical Birth Registry of Norway. (external link)
• Olsen, Jørn; Czeizel, Andrew; Sørensen, Henrik Toft et al. (2002). How do we best detect toxic effects of drugs taken during pregnancy?. (external link)
• Irgens, Lorentz (2002). Oppdagelsen av leprabasillen. (external link)
• Meima, Abraham; Irgens, Lorentz; van Oortmarssen, Gerrit J. et al. (2002). Disappearance of leprosy from Norway: an exploration of critical factors using an epidemiological modelling approach. (external link)
• Irgens, Lorentz (2002). Medisinsk fødselsregister � et sentralt utgangspunkt for perinatalmedisinsk forskning. (external link)
• Nafstad, Per; Samuelsen, Sven O; Irgens, Lorentz et al. (2002). Birth weight and hearing impairment in Norwegians born 1967 to 1993. (external link)
• Alm, Bernt; Wennergren, Göran; Norvenius, S Gunnar et al. (2002). Breast feeding and the sudden infant death syndrome in Scandinavia 1992-1995. (external link)
• Meima, A; Irgens, Lorentz; Oortmarsen, GJv et al. (2002). Disappearance of leprosy from Norway: exploration of critical factors using an epidemiological modelling approach. (external link)
• Olsen, J; Czeizel, A; Sørensen, HT et al. (2002). How do we best detect toxic effects of drugs taken during pregnancy? A EuroMap paper. (external link)
• Irgens, Lorentz (2002). Kvinnor som har haft preeklampsi löper ökad risk för hjärtkardöd. (external link)
• Irgens, Lorentz (2002). Medisinsk fødselsregister – et sentralt utgangspunkt for perinatalmedisinsk forskning. (external link)
• Frøen, Jahn Frederik A.; Arnestad, Marianne; Vege, Åshild et al. (2002). Comparative epidemiology of sudden infant death syndrome and sudden intrauterine unexplained death. (external link)
• Nafstad, Per; Samuelsen, Sven Ove; Irgens, Lorentz et al. (2002). Birth weight and hearing impairment in Norwegians born from 1967 to 1993. (external link)
• Skomsvoll, Johan Fredrik; Baste, Valborg; Irgens, Lorentz et al. (2002). The Recurrence Risk of Adverse Outcome in the Second Pregnancy in Women With Rheumatic Disease. (external link)
• Irgens, HU; Reisæter, L; Irgens, Lorentz et al. (2001). Long term mortality of mothers and fathers after pre-eclampsia: population based cohort study. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Albrechtsen, Susanne et al. (2001). Women with a history of placental abruption: when in a subsequent pregnancy should special surveillance for a recurrent placental abruption be initiated?. (external link)
• Moster, Dag; Lie, Rolv Terje; Irgens, Lorentz et al. (2001). The association of Apgar score with subsequent death and cerebral palsy: A population-based study in term infants. (external link)
• Irgens, Henrik U.; Reisæther, Lars; Irgens, Lorentz et al. (2001). Long term mortality of mothers and fathers after pre-eclampsia: population based cohort study. (external link)
• Irgens, Ågot; Ulstein, Magnar; Irgens, Lorentz (2001). Reproductive outcome according to semen quality in couples with infertility problems. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Albrechtsen, Susanne et al. (2001). Women with a history of placental abruption: When in a subsequent pregnancy should special surveillance for a recurrent placental abruption be initiated?. (external link)
• Nilsen, Stein Tore; Daltveit, Anne Kjersti; Irgens, Lorentz (2001). Fødeinstitusjoner og fødsler i Norge i 1990-årene. (external link)
• Moster, Dag; Lie, Rolv Terje; Irgens, Lorentz et al. (2001). The association of Apgar score with subsequent death and cerebral palsy; A population based study in term infants. (external link)
• Skomsvoll, Johan F.; Østensen, Monika; Baste, Valborg et al. (2001). Number of births, interpregnancy interval and subsequent pregnancy rate after a diagnosis of inflammatory rheumatic disease in Norwegian women. (external link)
• Irgens, Lorentz (2001). Challenges to registry-based epidemiology in post-modernistic civilization. (external link)
• Alm, B; Norvenius, SG; Wennergen, G. et al. (2001). Changes in the epidemiology of sudden infant death syndrome in Sweden 1973-1996. (external link)
• Meberg, Alf; Broch, Harald; Irgens, Lorentz (2001). Cerebral parese som nyfødtmedisinsk kvalitetsindikator. (external link)
• Skomsvoll, Johan Fredrik; Østensen, Monica; Irgens, Lorentz et al. (2001). A population based Study of pregnancy complications and perinatal outcome in women with rheumatic disease in Norway. (external link)
• Alm, Bernt; Norvenius, SG; Wennergren, G et al. (2001). Changes in the epidemiology of sudden infant death syndrome in Sweden 1973-1996. (external link)
• Nilsen, Stein Tore; Daltveit, Anne Kjersti; Irgens, Lorentz (2001). Fødeinstitusjoner og fødsler i Norge i 1990-årene. (external link)
• Irgens, Lorentz (2001). Challenges to registry-based epidemiology in post-modernistic civilization. (external link)
• Kristensen, P; Irgens, Lorentz (2000). Maternal reproductive history: a registry based comparison of previous pregnancy data derived from maternal recall and data obtained during the actual pregnancy. (external link)
• Albrechtsen, Susanna; Rasmussen, Svein; Irgens, Lorentz (2000). Secular trends in peri- and neonatal mortality in breech presentation; Norway 1967-1994. (external link)
• Kristensen, Petter; Andersen, Aage; Irgens, Lorentz M (2000). Hormone-dependent cancer and adverse reproductive outcomes in farmers’ families — effects of climatic conditions favoring fungal growth in grain. (external link)
• Kristensen, Petter; Irgens, Lorentz M (2000). Maternal reproductive history: a registry based comparison of previous pregnancy data derived from maternal recall and data obtained during the actual pregnancy. (external link)
• Kristensen, P; Irgens, Lorentz (2000). Maternal reproductive history: a registry based comparison of previous pregnancy data derived from maternal recall and data obtained during the actual pregnancy. (external link)
• Egeland, Grace; Skjærven, Rolv; Irgens, Lorentz (2000). Birth characteristics of women who develop gestational diabetes: population based study. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Dalaker, Knut (2000). Outcome of subsequent pregnancies after placental abruption: a risk assessment. (external link)
• Bergsjø, Per; Irgens, Lorentz; Lie, Rolv Terje (2000). Registry based perinatal research. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Irgens, Lorentz (2000). Breech presentation; secular trends in perinatal and postnatal mortality 1967-1994. (external link)
• Alm, B; Norvenius, SG; Wennergren, G et al. (2000). Living conditions in early infancy in Denmark, Norway and Sweden 1992-95: results from the Nordic Epidemiological SIDS study. (external link)
• Irgens, Lorentz (2000). The Medical Birth Registry of Norway. Epidemiological research and surveillance throughout 30 years. (external link)
• Irgens, Lorentz (2000). Infeksjon og svangerskapsutfall, datagjenbruk og datakobling. (external link)
• Skomsvoll, JF; Østensen, M; Irgens, Lorentz et al. (2000). Pregnancy complcations and delivery practice in women with connective tissue disease and inflammatory rheumatic disease in Norway. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Albrechtsen, Susanne et al. (2000). Predicting preclampsia in the second pregnancy from low birth weight in the first pregnancy. (external link)
• Irgens, Å; Krüger, Kjell; Skorve, AH et al. (2000). Birth defects and paternal occupational exposure. Hypotheses tested in a record linkage based dataset. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Irgens, Lorentz (2000). Secular trends in peri- and neonatal mortality in breech presentation; Norway 1967-1994. (external link)
• Kristensen, P; Andersen, AA; Irgens, Lorentz (2000). Hormone-dependent cancer and adverse reproductive outcomes in farmers' families: Effects of climate conditions favoring fungal growth in grain. (external link)
• Hawthorne, G; Irgens, Lorentz; Lie, Rolv Terje (2000). Outcome of pregnancy in diabetic women in northeast England and in Norway, 1994-7. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Dalaker, K (2000). Outcome of subsequent pregnancies after placental abruption: a risk assessment. (external link)
• Vollset, Stein Emil; Refsum, Helga; Irgens, Lorentz et al. (2000). Plasma total homocysteine, pregnancy complications, and adverse pregnancy outcomes: the Hordaland Homocysteine Study. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Albrechtsen, Susanne et al. (2000). Predicitng preeclampsia in the second pregnancy from low birth weight in the first pregnancy. (external link)
• Hawthorne, G; Irgens, Lorentz; Lie, Rolv Terje (2000). Outcome of pregnancy in diabetic women in northeast England and in Norway, 1994-7. (external link)
• Bergsjo, P; Irgens, Lorentz; Lie, Rolv Terje (2000). Registry based perinatal research. (external link)
• Egeland, Grace M; Skjærven, Rolv; Irgens, Lorentz (2000). Birth characteristics of women who develop gestational diabetes: population based study. (external link)
• Irgens, Lorentz (2000). Infeksjon og svangerskapsutfall, datagjenbruk og datakobling. (external link)
• Irgens, Lorentz (2000). The Medical Birth Registry of Norway. Epidemiological research and surveillance throughout 30 years. (external link)
• Alm, B; Norvenius, SG; Wennergren, G et al. (2000). Living conditions in early infancy in Denmark, Norway and Sweden 1992-95: results from the Nordic Epidemiological SIDS study. (external link)
• Kristensen, P; Andersen, Aa; Irgens, Lorentz (2000). Hormone-dependent cancer and adverse reproductive outcomes in farmers' families: Effects of climate conditions favoring fungal growth in grain. (external link)
• Irgens, Å; Krüger, Kjell; Skorve, AH et al. (2000). Birth defects and paternal occupational exposure. Hypotheses tested in a record linkage based dataset. (external link)
• Vollset, Stein Emil; Refsum, H; Irgens, Lorentz et al. (2000). Plasma total homocysteine, pregnancy complications, and adverse pregnancy outcomes: the Hordaland Homocysteine study. (external link)
• Haug, Kjell; Irgens, Lorentz; Skjærven, Rolv et al. (2000). Maternal smoking and birthweight: effect modification of period, maternal age and paternal smoking. (external link)
• Skomsvoll, Johan Fredrik; Østensen, Monika; Irgens, Lorentz M et al. (1999). Perinatal outcome in pregnancies of women with connective tissue disease and inflammatory rheumatic disease in Norway. (external link)
• Alm, Bernt; Wennergren, G; Norvenius, G et al. (1999). Caffeine and alcohol as risk factors for sudden infant death syndrome. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Dalaker, Knut (1999). A history of placental dysfunction and risk of placental abruption. (external link)
• Irgens, Ågot; Irgens, Lorentz (1999). Male proportions in offspring of military air pilots in Norway. (external link)
• Irgens, Lorentz (1999). Genetisk epidemiologi og tvillingforskning (editorial). (external link)
• Alm, Bernt; Norvenius, SG; Wennergren, G et al. (1999). Living conditions in early infancy in Denmark, Norway and Sweden 1992-95: results from the Nordic Epidemiological SIDS study. (external link)
• Ulstein, Magnar; Irgens, Ågot; Irgens, Lorentz (1999). Secular trends in sperm variables for groups of men in fertile and infertile unions. (external link)
• Kristensen, Petter; Irgens, Lorentz (1999). Multiple pregnancies among women engaged in agriculture in Norway, 1967-91. (external link)
• Daltveit, Anne Kjersti; Vollset, Stein Emil; Irgens, Lorentz (1999). Population density and perinatal mortality in Norway and Sweden, 1975-1988. (external link)
• Bjerkedal, Thor; Thune, O.; Irgens, Lorentz (1999). Tidlig identifisering av barn med økt risiko for varig arbeidsuforhet. (external link)
• Daltveit, Anne Kjersti; Vollset, Stein Emil; Skjærven, Rolv et al. (1999). The impact of multiple births and elective deliveries on the trends in low birth weight in Norway 1967-95. (external link)
• Kristensen, Petter; Irgens, Lorentz M (1999). Multiple pregnancies among females engaged in agriculture in Norway, 1967-91. (external link)
• Ulstein, Magnar Knut; Irgens, Ågot; Irgens, Lorentz (1999). Secular trends in sperm variables for groups of men in fertile and infertile copules. (external link)
• Skomsvoll, Johan Fredrik; Østensen, M; Irgens, Lorentz et al. (1999). Perinatal outcome in pregnancies of women with connective tissue disease and inflammatory rheumatic disease in Norway. (external link)
• Rasmussen, R; Irgens, Lorentz; Dalaker, Knut (1999). A history of placental dysfunction and risk of placental abruption. (external link)
• Rosano, Aldo; Smithells, D; Robert, E et al. (1999). Times trends in neural tube defects prevalence in relations to preventive strategies: an international study. (external link)
• Haug, Kjell; Irgens, Lorentz; Baste, Valborg et al. (1998). Secular trends in breastfeeding and parental smoking. (external link)
• Irgens, Å.; Krüger, Kjell; Skorve, A. H. et al. (1998). Reproductive Outcome in Offspring of Parents Occupationally Exposed to Lead in Norway. (external link)
• Skomsvoll, J. F.; Østensen, M.; Irgens, Lorentz et al. (1998). Obstetrical and neonatal outcome in patients with rheumatic disease. (external link)
• Stoltenberg, C.; Magnus, P.; Lie, Rolv Terje et al. (1998). Influence of consanguinity and maternal education on risk of still birth and infant death in Norway 1967-1993. (external link)
• Albrechtsen, Susanna; Rasmussen, Svein; Dalaker, Knut et al. (1998). Perinatal mortality in Breech Presentation Sibships. (external link)
• Irgens, Lorentz (1998). The Medical Birth Registry of Norway; a source for epidemiological and clinical research. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz; Øyen, Nina et al. (1998). Sociodemographic risk factors for Sudden Infant Death Syndrome: associations with other risk factors. The Nordic Epidemiological SIDS Study. (external link)
• Irgens, Lorentz; Baste, Valborg; Wiik, P. et al. (1998). Clubfoot in offspring of servicemen in the Royal Norwegian Navy. (external link)
• Albrechtsen, Susanna; Rasmussen, Svein; Irgens, Lorentz et al. (1998). Factors influencing delivery method in breech presentation. (external link)
• Alm, B.; Milerad, J.; Wennergren, G. et al. (1998). A case-control study of smoking and sudden infant death syndrome in the Scandinavian countries, 1992-1995. The Nordic Epidemiological SIDS Study. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Dalaker, Knut (1998). The effect on the likelihood of further pregnancy of placental abruption and the rate of its recurrence. (Author's reply). (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Irgens, Lorentz et al. (1998). Factors influencing delivery method in breech presentation. (external link)
• Albrechtsen, Susanna; Rasmussen, Svein; Dalaker, Knut et al. (1998). Perinatal mortality in Breech Presentation Sibships. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Dalaker, Knut et al. (1998). Perinatal mortality in Breech Presentation Sibships. (external link)
• Alm, B.; Milerad, J.; Wennergren, G. et al. (1998). A case-control study of smoking and sudden infant death syndrome in the Scandinavian countries, 1992-1995. The Nordic Epidemiological SIDS Study. (external link)
• Stoltenberg, C.; Magnus, P.; Lie, Rolv Terje et al. (1998). Influence of consanguinity and maternal education on risk of still birth and infant death in Norway 1967-1993. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Dalaker, Knut (1998). The effect on the likelihood of further pregnancy of placental abruption and the rate of its recurrence. (Author's reply). (external link)
• Irgens, Å.; Krüger, Kjell; Skorve, A. H. et al. (1998). Reproductive Outcome in Offspring of Parents Occupationally Exposed to Lead in Norway. (external link)
• Irgens, Lorentz (1998). The Medical Birth Registry of Norway; a source for epidemiological and clinical research. (external link)
• Albrechtsen, Susanna; Rasmussen, Svein; Irgens, Lorentz et al. (1998). Reproductive Career After Breech Presentation: Subsequent Pregnancy Rates, Interpregnancy Interval, and Recurrence. (external link)
• Albrechtsen, Susanna; Rasmussen, Svein; Irgens, Lorentz et al. (1998). The occurrence of breech presentation in Norway 1967-1994. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz; Øyen, Nina et al. (1998). Sociodemographic risk factors for Sudden Infant Death Syndrome: associations with other risk factors. The Nordic Epidemiological SIDS Study. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Irgens, Lorentz et al. (1998). Reproductive Career After Breech Presentation: Subsequent Pregnancy Rates, Interpregnancy Interval, and Recurrence. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Irgens, Lorentz et al. (1998). The occurrence of breech presentation in Norway 1967-1994. (external link)
• Lie, Rolv Terje; Rasmussen, Svein; Brunborg, H. et al. (1998). Fetal and maternal contributions to risk of pre-eclampsia: population based study. (external link)
• Skomsvoll, Johan Fredrik; Østensen, Monica; Irgens, LM et al. (1998). Obstetrical and neonatal outcome in pregnant patients with rheumatic disease. (external link)
• Øyen, Nina; Markestad, Trond; Skjaerven, Rolv et al. (1997). Combined effects of sleeping position and prenatal factors in sudden infant death syndrome (SIDS). The Nordic Epidemiological SIDS Study. (external link)
• Albrechtsen, Susanna; Rasmussen, S.; Reigstad, S. et al. (1997). Evaluation of a protocol for selecting fetuses in breech presentation for vaginal delivery or cesarean section. (external link)
• Botto, L.; Khoury, M. J.; Mastroiacovo, P. et al. (1997). The spectrum of Congenital Anomalies of the VATER Association: An International Study. (external link)
• Stoltenberg, C.; Magnus, P.; Lie, Rolv Terje et al. (1997). Birth Defects and Parental Consanguinity in Norway. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Dalaker, Knut (1997). The effect on the likelihood of further pregnancy of placental abruption and the rate of its recurrence. (external link)
• Daltveit, Anne Kjersti; Vollset, Stein Emil; Olaussen, P. O. et al. (1997). Infant mortality in Norway and Sweden 1975-88: a cause specific analysis of an increasing difference. (external link)
• Bjerkedal, T.; Irgens, Lorentz; Daltveit, Anne Kjersti (1997). Occurrence and survival of low birthweight births in the Nordic countries, 1980-94. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Dalaker, Knut et al. (1997). Continuation and recurrence of breech presentation. (external link)
• Lie, R.T.; Irgens, Lorentz (1997). The Norwegian national birth cohort. (external link)
• Øyen, Nina; Haglund, B.; Skjærven, R. et al. (1997). Maternal smoking, birthweight and gestational age in sudden infant death syndrome (SIDS) babies and their surviving siblings. (external link)
• Stoltenberg, C.; Magnus, P.; Lie, Rolv Terje et al. (1997). Birth defects and parental consanguinity in Norway. (external link)
• Kristensen, P.; Irgens, Lorentz; Bjerkedal, T. (1997). Environmental factors, reproductive history and selective fertility in farmers' sibships. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Bergsjø, P. et al. (1997). Perinatal mortality and case fatality after placental abruption in Norway 1967-1991. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Dalaker, Knut (1997). The effect on the likelihood of further pregnancy of placental abruption and the rate of its recurrence. (external link)
• Irgens, Å.; Kjell, Krüger; Skorve, A. H. et al. (1997). Medfødte misdannelser og fars yrkesposisjon: Hypoteser basert på funn fra tidligere studier etterprøvet i et norsk registermateriale. (external link)
• Irgens, Lorentz (1997). Medisinsk fødselsregister, en hjørnesten i norsk epidemiologi. (external link)
• Daltveit, Anne Kjersti; Øyen, Nina; Skjærven, Rolv et al. (1997). The epidemic of SIDS in Norway 1967-93. Changing effects of risk factors. (external link)
• Bjerkedal, Thor; Irgens, Lorentz; Daltveit, Anne Kjersti (1997). Occurrence and survival of low birthweight births in the Nordic countries, 1980-94. (external link)
• Kristensen, P.; Andersen, A.; Irgens, Lorentz et al. (1997). Birth defects in offspring of Norwegian farmers, 1967-1991. (external link)
• Daltveit, Anne Kjersti; Vollset, Stein Emil; Olaussen, P. O. et al. (1997). Infant mortality in Norway and Sweden 1975-88: a cause specific analysis of an increasing difference. (external link)
• Albrechtsen, Susanna; Rasmussen, Svein; Reigstad, H. et al. (1997). Evaluation of a protocol for selecting fetuses in breech presentation for vaginal delivery or cesarean section. (external link)
• Botto, L.; Khoury, M. J.; Mastroiacovo, P. et al. (1997). The spectrum of Congenital Anomalies of the VATER Association: An International Study. (external link)
• Daltveit, Anne Kjersti; Øyen, Nina; Skjærven, Rolv et al. (1997). The epidemic of SIDS in Norway 1967-93. Changing effects of risk factors. (external link)
• Wennergren, G.; Alm, B.; Øyen, Nina et al. (1997). The decline in the incidence of SIDS in Scandinavia and its relation to risk-intervention campaigns. (external link)
• Daltveit, Anne Kjersti; Øyen, Nina; Skjærven, Rolv et al. (1997). The epidemic of SIDS in Norway 1967-93. Changing effects of risk factors. (external link)
• Daltveit, Anne Kjersti; Vollset, Stein Emil; Olaussen, P. O. et al. (1997). Infant mortality in Norway and Sweden 1975-88: a cause specific analysis of an increasing difference. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Bergsjø, P. et al. (1997). Perinatal mortality and case fatality after placental abruption in Norway 1967-1991. (external link)
• Wennergren, G.; Alm, B.; Øyen, Nina et al. (1997). The decline in the incidence of SIDS in Scandinavia and its relation to risk-intervention campaigns. (external link)
• Stoltenberg, C.; Magnus, P.; Lie, Rolv Terje et al. (1997). Birth Defects and Parental Consanguinity in Norway. (external link)
• Kristensen, P.; Andersen, A.; Irgens, Lorentz et al. (1997). Birth defects in offspring of Norwegian farmers, 1967-1991. (external link)
• Irgens, Å.; Krüger, Kjell; Skorve, A. H. et al. (1997). Male proportion in offspring of parents exposed to strong static and extremely low frequency electromagnetic fields in Norway. (external link)
• Kristensen, P.; Andersen, A.; Irgens, Lorentz et al. (1997). Gestational age, birthweight and perinatal death among births to Norwegian farmers, 1967-1991. (external link)
• Kristensen, P.; Irgens, Lorentz; Bjerkedal, T. (1997). Environmental factors, reproductive history and selective fertility in farmers' sibships. (external link)
• Irgens, Å.; Krüger, Kjell; Skorve, A. H. et al. (1997). Medfødte misdannelser og fars yrkesposisjon: Hypoteser basert på funn fra tidligere studier etterprøvet i et norsk registermateriale. (external link)
• Campbell, M. K.; Østbye, T.; Irgens, Lorentz (1997). Post-term birth: Risk factors and outcomes in a 10 year cohort of Norwegian births. (external link)
• Irgens, Lorentz (1997). Medisinsk fødselsregister, en hjørnesten i norsk epidemiologi. (external link)
• Bjerkedal, Thor; Osnes, K.; Finne, P. et al. (1997). Overlevelse og sykelighet blant barn med lav fødselsvekt. (external link)
• Botto, L.; Khoury, M. J.; Mastroiacovo, P. et al. (1997). The spectrum of Congenital Anomalies of the VATER Association: An International Study. (external link)
• Albrechtsen, Susanne; Rasmussen, Svein; Reigstad, H. et al. (1997). Evaluation of a protocol for selecting fetuses in breech presentation for vaginal delivery or cesarean section. (external link)
• Kristensen, P.; Andersen, A.; Irgens, Lorentz et al. (1997). Gestational age, birthweight and perinatal death among births to Norwegian farmers, 1967-1991. (external link)
• Irgens, Å.; Krüger, Kjell; Skorve, A. H. et al. (1997). Male proportion in offspring of parents exposed to strong static and extremely low frequency electromagnetic fields in Norway. (external link)
• Bjerkedal, Thor; Osnes, K.; Finne, P. et al. (1997). Overlevelse og sykelighet blant barn med lav fødselsvekt. (external link)
• Albrechtsen, Susanna; Rasmussen, Svein; Dalaker, Knut et al. (1997). Continuation and recurrence of breech presentation. (external link)
• Campbell, M. K.; Østbye, T.; Irgens, Lorentz (1997). Post-term birth: Risk factors and outcomes in a 10 year cohort of Norwegian births. (external link)
• Lie, Rolv Terje; Rasmussen, Svein; Brunborg, H. et al. (1997). Fetal and maternal contributions to risk of pre-eclampsia: population based study. (external link)
• Lie, Rolv Terje; Rasmussen, Svein; Brunborg, H. et al. (1997). Fetal and maternal contributions to risk of pre-eclampsia: population based study. (external link)
• Øyen, Nina; Skjaerven, Rolv; Irgens, Lorentz (1996). Population-based recurrence risk of sudden infant death syndrome (SIDS), compared with other infant and fetal deaths. (external link)
• Irgens, Lorentz M.; Markestad, Trond; Baste, Valborg et al. (1995). Sleeping position and sudden infant death syndrome in Norway 1967-1991. (external link)
• Øyen, Nina; Irgens, Lorentz; Skjaerven, Rolv et al. (1994). Secular trends of sudden infant death syndrome in Norway, 1967-1988. Application of a method of case identification to Norwegian registry data. (external link)
• Irgens, Lorentz (1984). The discovery of Mycobacterium leprae: A medical achievement in the light of evolving scientific methods. (external link)

Brochure

• Flaten, Trond Peder; Irgens, Lorentz M.; Næss, Truls Petter (2017). Festskrift for Medisinsk fødselsregisters 50 års jubileum. Norsk Epidemiologi 2017, Vol. 27 No. 1-2. ISSN: 0803-2491.. (external link)

Book review

• Irgens, Lorentz M. (2016). Tankevekkende om sykdomsårsaker. Bokanmeldelse.. (external link)
• Irgens, Lorentz M. (2014). Knapt for den interesserte leser. Bokanmeldelse. (external link)
• Irgens, Lorentz M. (2013). En folkefiende i San Francisco. Bokanmeldelse. (external link)
• Irgens, Lorentz M. (2012). Leprosy Rrevisited. Bokanmeldelse av WHO Expert Committtee on Leprosy (Eight report). (external link)

Chapter

• Irgens, Lorentz M. (2016). Registerbasert medisin i et internasjonalt pionermiljø i Bergen.. (external link)

Short communication

• Tellnes, Gunnar; Irgens, Lorentz M.; Kristensen, Petter et al. (2015). MINNEORD: Tor Bjerkedal. (external link)
• Ebbing, Marta; Irgens, Lorentz M.; Reigstad, Nina Aaland (2012). Alvorlige fødselsrifter. (external link)

Letter to the editor

• Rasmussen, Svein; Irgens, Lorentz M.; Espinoza, Jimmy (2015). Authors' reply re: Maternal obesity and excess of fetal growth in pre-eclampsia. (external link)
• Gåsemyr, Kristin; Irgens, Lorentz M (2006). Abort – ikke lenger behov for forskning?. (external link)
• Gåsemyr, Kristin; Irgens, Lorentz (2006). Abort – ikke lenger behov for forskning?. (external link)

Reader opinion piece

• Kristensen, Petter; Susser, Ezra; Irgens, Lorentz M. et al. (2014). Kristensen et al. respond to ”high birth weight and later health”. Response to invited commentary. (external link)
• Irgens, Lorentz M.; Daltveit, Anne Kjersti; Bjørstad, Astrid Rognebakke et al. (2011). Macrosomia and adverse pregnancy outcome: the role of maternal height REPLY. (external link)
• Andersen, Guro L; Irgens, Lorentz M.; Skranes, Jon et al. (2010). Is breech presentation a risk factor for cerebral palsy?. (external link)
• Hawthorne, Gillian; Irgens, Lorentz; Lie, Rolv Terje et al. (2003). Retraction of paper on maternal diabetes. (external link)
• Hawthorne, G; Irgens, Lorentz; Lie, Rolv Terje (2001). Outcome of pregnancy in diabetic women - authors reply (letter). (external link)
• Egeland, Grace M.; Skjaerven, Rolv; Irgens, Lorentz (2001). Is a multiple birth pregnancy a risk factor for gestational diabetes?. (external link)
• Irgens, Ågot; Ulstein, Magnar Knut; Irgens, Lorentz (2001). Reproductive outcome according to semen quality in couples with infertility problems (correpondence). (external link)
• Egeland, Grace; Irgens, Lorentz (2001). Is a multiple birth pregnancy a risk factor for gestational diabetes? (letter). (external link)

Academic lecture

• Strand, Kristin Melheim; Heimstad, Runa; Iversen, Ann-Charlotte et al. (2013). Is the association between pre-eclampsia and cerebral palsy mediated solely through preterm birth? A population based cohort study. (external link)
• Stoknes, Magne; Andersen, Guro Lillemoen; Dahlseng, Magnus Odin et al. (2012). Cerebral Palsy and Neonatal Death in Term Singletons Born Small for Gestational Age. (external link)
• Elkamil, Areej Ibrahim; Andersen, Guro Lillemoen; Salvesen, Kjell Å et al. (2010). Induction of labor and cerebral palsy: a population-based study in Norway. (external link)
• Stoknes, Magne; Andersen, Guro Lillemoen; Elkamil, Areej Ibrahim et al. (2010). The effect of multiple risk factors for cerebral palsy. (external link)
• Andersen, Guro Lillemoen; Mjøen, Tone; Haagaas, Ivar et al. (2008). Communication skills and early identification of AAC needs in children with cerebral palsy. (external link)
• Gravseth, Hans Magne Ulrik; Kristensen, Petter; Bjerkedal, Tor et al. (2007). Intellectual performance and disability pension. (external link)
• Gravseth, Hans Magne Ulrik; Kristensen, Petter; Bjerkedal, Tor et al. (2007). Intellectual performance and disability pension. (external link)
• Gravseth, Hans Magne; Kristensen, Petter; Aalen, Odd O et al. (2006). Livsløpsdeterminanter for tidlig uførepensjon. (external link)
• Nordby, Karl-Christian; Irgens, Lorentz M; Kristensen, Petter (2004). Immunologic exposures in Norwegian agriculture and pregnancy induced hypertension. (external link)
• Rasmussen, Svein; Irgens, Lorentz (2002). Føtal vekst og kroppsproporsjon ved preeklampsi. (external link)
• Nafstad, Per; Samuelsen, Sven Ove; Irgens, Lorentz et al. (2001). Birth weight and hearing impairment in norwegians born 1967 to 1993. (external link)
• Irgens, Lorentz; Skjærven, Rolv (2001). Repeated SIDS in a family. Abstract. (external link)
• Skjærven, Rolv; Irgens, Lorentz (2001). SIDS and interval between pregnancies. (external link)
• Nafstad, Per; Samuelsen, Sven Ove; Irgens, Lorentz et al. (2001). Birth weight and hearing impairment in norwegians born 1967 to 1993. (external link)
• Irgens, Lorentz (1998). Perinatal Helse i Vestforld og Telemark. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz; Øyen, Nina et al. (1998). Circadian variations in sudden infant death; association with maternal smoking. The Nordic Epidemiological SIDS Study. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz; Øyen, Nina et al. (1998). Circadian variations in sudden infant death; association with maternal smoking. The Nordic Epidemiological SIDS Study. (external link)
• Skomsvoll, Johan Fredrik; Østensen, M; Irgens, Lorentz M et al. (1998). Obstetrical and neonatal outcome in pregnant patients with rheumatic disease. (external link)
• Irgens, Lorentz (1998). Gatroschisis in Norway 1967-95. (external link)
• Kelmanson, I. A.; Wennergren, G.; Alm, B. et al. (1997). Preliminary results of the joint Nordic-Russian Study on the risk factors of sudden infant death syndrome (SIDS). (external link)
• Daltveit, Anne Kjersti; Øyen, Nina; Skjærven, Rolv et al. (1997). The epidemic of SIDS in Norway 1967-93. Changing effects of risk factors. (external link)
• Skjærven, Rolv; Øyen, Nina; Irgens, Lorentz et al. (1997). Risk scores for SIDS: Now more useful?. (external link)
• Alm, B.; Wennergren, G.; Norveinius, G. et al. (1997). Dummy use and SIDS in the Scandinavian countries 1992-1995. The Nordic Epidemiological SIDS Study. (external link)
• Vollset, Stein Emil; Irgens, Lorentz; Bjørke-Monsen, Anne Lise et al. (1997). Total plasma homocysteine and previous occurrence of congenital malformations: The Hordaland Homocysteine Study. (external link)
• Daltveit, Anne Kjersti; Øyen, Nina; Skjærven, Rolv et al. (1997). The epidemic of SIDS in Norway 1967-93. Changing effects of risk factors. (external link)
• Daltveit, Anne Kjersti; Øyen, Nina; Skjærven, Rolv et al. (1997). The epidemic of SIDS in Norway 1967-93. Changing effects of risk factors. (external link)
• Skjærven, Rolv; Øyen, Nina; Irgens, Lorentz et al. (1997). Risk scores for SIDS: Now more useful?. (external link)
• Øyen, Nina; Markestad, Trond; Skjærven, Rolv et al. (1997). Combined effects of sleeping position and prenatal factors in sudden infant death syndrome (SIDS). The Nordic Epidemiological SIDS study. (external link)
• Helweg-Larsen, K.; Irgens, Lorentz; Millerad, J. et al. (1997). Pludselig spædbarnsdød i Norden. Sudden infant death in the Nordic countries. (external link)
• Øyen, Nina; Skjærven, R.; Helweg-Larsen, K. et al. (1997). Co-sleeping and risk of sudden infant death syndrome (SIDS). The Nordic Epidemiological SIDS Study. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz; Alm, B. et al. (1997). Interactions of Maternal risk factors and sex, age at death, seasonality, as well as hour found dead. The Nordic Epidemiological SIDS Study. (external link)
• Haug, Kjell; Irgens, Lorentz; Markestad, Trond et al. (1997). Paternal smoking and breastfeeding in Norway 1970-1991. (external link)
• Øyen, Nina; Markestad, Trond; Skjærven, Rolv et al. (1997). Combined effects of sleeping position and prenatal factors in sudden infant death syndrome (SIDS). The Nordic Epidemiological SIDS study. (external link)
• Øyen, Nina; Markestad, Trond; Skjærven, Rolv et al. (1997). Combined effects of sleeping position and prenatal factors in sudden infant death syndrome (SIDS). The Nordic Epidemiological SIDS study. (external link)
• Helweg-Larsen, Karin; Irgens, Lorentz; Millerad, J. et al. (1997). Pludselig spædbarnsdød i Norden. Sudden infant death in the Nordic countries. (external link)
• Skjærven, Rolv; Øyen, Nina; Irgens, Lorentz et al. (1997). Risk scores for SIDS: Now more useful?. (external link)
• Øyen, Nina; Markestad, Trond; Skjærven, Rolv et al. (1997). Combined effects of sleeping position and prenatal factors in sudden infant death syndrome (SIDS). The Nordic Epidemiological SIDS study. (external link)
• Kelmanson, I. A.; Wennergren, G.; Alm, B. et al. (1997). Preliminary results of the joint Nordic-Russian Study on the risk factors of sudden infant death syndrome (SIDS). (external link)
• Skjærven, Rolv; Øyen, Nina; Irgens, Lorentz et al. (1997). Risk scores for SIDS: Now more useful?. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz; Alm, B. et al. (1997). Interactions of Maternal risk factors and sex, age at death, seasonality, as well as hour found dead. The Nordic Epidemiological SIDS Study. (external link)
• Irgens, Lorentz; Baste, Valborg; Wiik, P. et al. (1997). Clubfoot in offspring of the servicemen in the Royal Norwagian Navy. (external link)
• Kelmanson, I. A.; Wennergren, G.; Alm, B. et al. (1997). Preliminary results of the joint Nordic-Russian Study on the risk factors of sudden infant death syndrome (SIDS). (external link)
• Alm, B.; Wennergren, G.; Norvenius, G. et al. (1997). Dummy use and SIDS in Scandinavian counties. The Nordic Epidemiological SIDS Study. (external link)
• Kelmanson, I.A.; Wennergren, G.; Alm, B. et al. (1997). Preliminary results of the joint Nordic-Russian Study on then risk factors of sudden infant death syndrome (SIDS). (external link)
• Baste, Valborg; Øyen, Nina; Irgens, Lorentz M. et al. (1995). Seasonality of SIDS in Norway. (external link)
• Haug, Kjell; Irgens, Lorentz M.; Markestad, Trond et al. (1995). Smoking habits among pregnant women in Norway 1970-1991. (external link)

Abstract

• Strand, Kristin Melheim; Heimstad, Runa; Iversen, Ann-Charlotte et al. (2013). Is the association between pre-eclampsia and cerebral palsy mediated solely through preterm birth? A population based cohort study. (external link)
• Stoknes, Magne; Andersen, Guro Lillemoen; Dahlseng, Magnus Odin et al. (2012). Cerebral Palsy and Neonatal Death in Singletons Born Small for Gestational Age at Term. (external link)
• Klungsøyr, Kari ; Skjaerven, Rolv; Tandberg, Anne et al. (2012). IS INCREASED PERINATAL MORTALITY FOR THE SECOND TWIN RELATED TO ASSISTED REPRODUCTIVE TECHNIQUES? A POPULATION BASED COHORT STUDY FROM NORWAY, 1988-2008. (external link)
• Baghestan, Elham; Irgens, Lorentz M.; Bordahl, PE et al. (2011). RISK OF RECURRENCE AND SUBSEQUENT DELIVERY AFTER OBSTETRIC ANAL SPHINCTER INJURIES. (external link)
• Wallenius, Marianne; Skomsvoll, Johan Fredrik; Irgens, Lorentz M. et al. (2010). REPRODUCTION IN WOMEN WITH CHRONIC INFLAMMATORY ARTHRITIDES. (external link)
• Stoknes, Magne; Andersen, Guro Lillemoen; Elkamil, Areej Ibrahim et al. (2010). The effect of multiple risk factors for cerebral palsy. (external link)
• Melve, Kari Klungsøyr; Lie, Rolv T.; Skjaerven, Rolv et al. (2009). Down Syndrome registration in the Medical Birth Registry of Norway: Validity and time trends. (external link)
• Wallenius, Marianne; Skomsvoll, JF; Irgens, Lorentz M et al. (2009). Lifetime fertility rates in women with chronic inflammatory arthritides: results from a patient register linked to a medical birth registry. (external link)
• Leversen, KT; Sommerfelt, K; Irgens, Lorentz M et al. (2009). Cognitive outcome at 5 years of age in a national cohort of extremely pre-term infants. (external link)
• Leversen, KT; Sommerfelt, K; Irgens, Lorentz M et al. (2009). Relationship between cognitive and motor function at 5 years of age in a national cohort of extremely preterm infants. (external link)
• Wallenius, Marianne; Skomsvoll, Johan Fredrik; Irgens, Lorentz M. et al. (2009). Lifetime fertility rates in women with chronic inflammatory arthritides: results from a patient register linked to a medical birth registry. (external link)
• Wallenius, Marianne; Skomsvoll, Johan Fredrik; Irgens, Lorentz M et al. (2008). Risk of onset of both Rheumatoid arthritis and other chronic arthritides during the first year after delivery. (external link)
• Wallenius, M; Skomsvoll, JF; Irgens, Lorentz M et al. (2008). Risk of onset of both rheumatoid arthritis and other chronic arthritides during the first year after delivery. (external link)
• Klungsøyr, Kari; Lie, Rolv Terje; Skjærven, Rolv et al. (2008). Registration of Down's syndrome in the medical birth registry of Norway; validity and time trends. (external link)
• Skjaerven, Rolv; Wilcox, Allen J.; Melve, Kari Klungsøyr et al. (2007). Preeclampsia and long-term maternal mortality. (external link)
• Eide, Martha Gunn; Skjærven, Rolv; Bjerkedal, T et al. (2005). Long-term ability, disability and mortality among males with birth defects: Population-based cohort study, 1967-1999. (external link)

Editorial

• Baghestan, Elham; Irgens, Lorentz M.; Børdahl, Per E et al. (2012). Risk of Recurrence and Subsequent Delivery After Obstetric Anal Sphincter Injuries EDITORIAL COMMENT. (external link)
• Irgens, Lorentz M (2007). Commentary: On the clinical prediction of pre-eclampsia and its enigmatic aetiology. (external link)
• Irgens, Lorentz (2007). Commentary: On the clinical prediction of pre-eclampsia and its enigmatic aetiology. (external link)
• Irgens, Lorentz; Kristensen, Petter; Vatten, Lars (2005). Tidlig eksponering og senere sykdom. (external link)

Poster

• Nes, Ragnhild Bang; Hauge, Lars Johan; Røysamb, Espen et al. (2012). Maternal Well-Being and Psychological Distress: A Prospective Longitudinal Study of Mothers Giving Birth to Children With Congenital Anomalies. (external link)
• Vikse, Bjørn Egil; Irgens, Lorentz; Bostad, Leif et al. (2003). Perinatal factors and later kidney disease as diagnosed by kidney biopsy. (external link)
• Skomsvoll, Johan Fredrik; Østensen, Monika; Irgens, Lorentz M. et al. (1999). A population based study of pregnancy outcome in women with rheumatic disease in Norway. (external link)
• Skomsvoll, Johan Fredrik; Østensen, M; Irgens, Lorentz M et al. (1999). A population based study of pregnancy and perinatal outcome in women with rheumatic disease in Norway. (external link)

Feature article

• Irgens, Lorentz M. (2012). Gerhard Henrik Armauer Hansen, 100 år etter hans død ”En i sandhet lysets apostel”. (external link)
• Sandmo, Sigurd Sverdrup; Irgens, Lorentz (2001). Lepraarkivene og Verdens hukommelse. (external link)
• Rasmussen, Svein; Irgens, Lorentz; Dalaker, Knut (1999). The effect on the likelihood of further pregnancy of placental abruption and the rate of its recurrence. (Author's reply). (external link)
• Irgens, Ågot; Irgens, Lorentz (1999). Interpreting the female excess among births to women with adverse chemical or occupational exposures. (Letter). (external link)
• Albrechtsen, Susanne; Irgens, Lorentz; Dalaker, Knut (1998). Breech delivery protocol. [Letter]. (external link)
• Irgens, Lorentz; Mæland, Henry John (1997). Register for friskere barn. [Kronikk]. (external link)
• Irgens, Lorentz; Mæland, Henry John (1997). Register for friskere barn. [Kronikk]. (external link)

Doctoral dissertation

• Andersen, Guro Lillemoen; Vik, Torstein; Skranes, Jon et al. (2011). Cerebral palsy in Norway - subtypes, severity and risk factors. (external link)
• Irgens, Lorentz M. (1980). Leprosy in Norway : an epidemiological study based on a national patient registry. (external link)

Textbook

• Irgens, Lorentz M. (2010). Forebyggende helsearbeid og ditt ansvar som lege. (external link)

Academic monograph

• Milnes, Kirsten Lolita; Irgens, Lorentz M. (2010). Journey from the dark. Leprosy in Spain and the United States in the 19th and 20th centuries. (external link)

Encyclopedia article

• Irgens, Lorentz M. (2008). Epidemiology, historical. (external link)
• Irgens, Lorentz M (2008). Epidemiology, Historical. (external link)
• Irgens, Lorentz (2006). Hansen, Gerhard Henrik Armauer. (external link)

Popular scientific book

• Harris, Christopher John; Gjerstad, Jo; Irgens, Lorentz M et al. (2007). Pleiestiftelsen for spedalske No 1: 1857-2007. (external link)
• Irgens, Lorentz M; Nedrebø, Yngve; Sandmo, Sigurd et al. (2006). Lepra. (external link)
• Irgens, Lorentz M; Nedrebø, Yngve; Sandmo, Sigurd et al. (2006). Leprosy. (external link)

Popular scientific chapter/article

• Irgens, Lorentz M (2007). Pleiestiftelsen for spedalske no 1 - norsk helsevesens første flaggskip (Bygger på artikkel i Naturen, 1989 no 6, s. 208-213). (external link)
• Irgens, Lorentz M (2006). Oppdagelsen av leprabasillen. En medisinsk bragd sett i lys av samtidens vitenskapelige metodeutvikling. (external link)
• Irgens, Lorentz M (2006). The discovery of Mycobacterium leprae. A medical achievement in the light of evolving scietific methods. (external link)
• Nedrebø, Yngve; Lie, Stein Atle; Irgens, Lorentz M (2006). The Leprosy epidemic of Norway. (external link)
• Irgens, Lorentz M; Bjerkedal, Tor (2006). Lepraepidemiologi i Norge: Lepraregisterets historie fra 1856 til i dag. (external link)
• Irgens, Lorentz M; Bjerkedal, Tor (2006). Epidemiology of Leprosy in Norway: The History of The National Leprosy Registry of Norway from 1856 until today. (external link)
• Nedrebø, Yngve; Lie, Stein Atle; Irgens, Lorentz M (2006). Lepraepidemien i Norge. (external link)

Academic anthology/Conference proceedings

• Irgens, Lorentz; Nedrebø, Yngve; Sandmo, Sigurd et al. (2006). Lepra. (external link)
• Irgens, Lorentz; Nedrebø, Yngve; Sandmo, Sigurd et al. (2006). Leprosy. (external link)

Report

• Irgens, Lorentz M (2006). Fødsler i Norge 2003-2004. Årsrapport, Medisinsk fødselsregister / Annual report 2003-2004, Medical Birth Registry of Norway. (external link)
• Flaten, Trond Peder; Irgens, Lorentz M.; Kristensen, Petter et al. (2005). Tidlig eksponering og senere sykdom. Temanummer av tidsskriftet Norsk Epidemiologi, 2005, Vol. 15, No. 1. (external link)
• Irgens, Lorentz (2004). Fødsler i Norge 2001-2002. Årsrapport, Medisinsk fødselsregister / Annual Report, Medical Birth Registry of Norway. (external link)
• Irgens, Lorentz M. (2002). Fødsler i Norge: årsmelding 1999 og 2000. (external link)
• Irgens, Lorentz M. (1999). Medisinsk fødselsregister: årsmelding 1997. (external link)
• Irgens, Lorentz M. (1999). Medisinsk fødselsregister: årsrapport 1998. På oppdrag fra Statens institutt for folkehelse . (external link)
• Irgens, Lorentz M. (1998). Fødsler i Norge gjennom 30 år 1967-96. (external link)
• Helweg-Larsen, K.; Øyen, Nina; Millerad, J. et al. (1997). Sudden infant Death in the Nordic countries. Results of the Nordic study of Infant Death Syndrome. Final Report. (external link)
• Helweg-Larsen, Karin; Øyen, Nina; Millerad, J. et al. (1997). Sudden infant Death in the Nordic countries. Results of the Nordic study of Infant Death Syndrome. Final Report. (external link)
• Irgens, Lorentz M. (1997). Fødsler i Norge gjennom 30 år. (external link)
• Irgens, Å; Krüger, Kjell; Skorve, AH. et al. (1996). Yrke og reproduksjonsutfall. (external link)
• Medisinsk fødselsregister, [Mangler fornavn]; Irgens, Lorentz M. (1996). Medisinsk fødselsregister: årsmelding 1995. (external link)
• Irgens, Ågot; Krüger, Kjell; Skorve, AH. et al. (1996). Yrke og reproduksjonsutfall. (external link)
• Irgens, Lorentz M. (1996). Medisinsk fødselsregister: årsmelding 1996 . (external link)
• Irgens, Lorentz M. (1995). Medisinsk fødselsregister: årsmelding 1994. (external link)
• Irgens, Lorentz M. (1995). Medisinsk fødselsregister: årsmelding 1993. (external link)
• Irgens, Lorentz M. (1994). Medisinsk fødselsregister: årsmelding 1992.. (external link)
• Irgens, Lorentz M. (1992). Medisinsk fødselsregister: årsmelding 1991. . (external link)
• Irgens, Lorentz M. (1991). Medisinsk fødselsregister: årsmelding 1990. (external link)
• Irgens, Lorentz M. (1990). Medisinsk fødselsregister: årsmelding 1989.. (external link)
• Irgens, Lorentz M. (1989). Medisinsk fødselsregister: årsmelding 1988. (external link)
• Irgens, Lorentz M. (1988). Medisinsk fødselsregister: årsmelding 1987 . (external link)
• Irgens, Lorentz M.; Bakketeig, Leiv Sigmund (1987). Fødsler og perinatale helseproblemer 1967-1984. (external link)
• Irgens, Lorentz M. (1986). Medisinsk fødselsregister: årsmelding 1986. (external link)
• Irgens, Lorentz M. (1985). Medisinsk fødselsregister: årsmelding 1985. (external link)

Academic chapter/article/Conference paper

• Irgens, Lorentz (2006). Oppdagelsen av leprabasillen. En medisinsk bragd sett i lys av samtidens vitenskapelige metodeutvikling. (external link)
• Irgens, Lorentz (2006). The discovery of Mycobacterium leprae: A medical achievement in the light of evolving scientific methods. (external link)
• Nedrebø, Yngve; Lie, Stein Atle; Irgens, Lorentz (2006). Lepraepidemien i Norge. (external link)
• Nedrebø, Yngve; Lie, Stein Atle; Irgens, Lorentz (2006). The Leprosy epidemic of Norway. (external link)
• Irgens, Lorentz (2003). Kampen mot lepra. (external link)
• Irgens, Lorentz (2003). Våre medisinske helseregistre; viktige verktøy i kvantitativ medisin og medisinsk kvalitetssikring. (external link)
• Albrechtsen, Susanne; Irgens, Lorentz (2002). Epidemiology and aetiology of breech presentation. (external link)
• Irgens, Lorentz (2000). Prefaced. (external link)
• Irgens, Lorentz (2000). Prefaced. (external link)
• Irgens, K; Irgens, Lorentz (2000). St. Jørgens Hospital institusjons- og bygningshistorie. (external link)
• Irgens, Lorentz (1999). Hvorfor informere om risikofaktorer?. (external link)
• Irgens, Lorentz (1999). Barnedød i et tidsperspektiv. (external link)
• Irgens, Lorentz (1997). Epilog: Forskeren og mennesket. Johanne-Margrethe Patrix: Gerhard Armauer Hansen, leprabasillens oppdager. (external link)
• Irgens, Lorentz (1997). Epilog: Forskeren og mennesket. Johanne-Margrethe Patrix: Gerhard Armauer Hansen, leprabasillens oppdager. (external link)
• Lie, Rolv Terje; Irgens, Lorentz; Heuch, Ivar (1994). Epidemiologisk overvåkning av medfødte misdannelser. (external link)

Popular scientific article

• Albrechtsen, Susanne; Rasmussen, Svein; Irgens, Lorentz (2000). Breech presentation; secular trends in perinatal and postnatal mortality 1967-1994. (external link)
• Schreuder, Patricia; Irgens, Lorentz (1998). Den norske mor og barn-studien. (external link)
• Schreuder, Patricia; Irgens, Lorentz (1998). Nasjonal epidemiologisk overvåking av krybbedød i Norge. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz (1998). Hva var verdt å ta med hjem fra Rouen? Epidemiologene forteller. (external link)
• Daltveit, Anne Kjersti; Irgens, Lorentz (1998). Hva var verdt å ta med hjem fra Rouen? Epidemiologene forteller. (external link)
• Markestad, Trond; Irgens, Lorentz (1998). Barn med ekstremt lav fødselsvekt. (external link)
• Irgens, Lorentz (1997). Er faren for krybbedød større om vinteren enn om sommeren?. (external link)
• Irgens, Lorentz (1997). Er faren for krybbedød større om vinteren enn om sommeren?. (external link)

Other

• Irgens, K; Irgens, Lorentz (2000). St. Jørgens Hospital institusjons- og bygningshistorie. (external link)

Popular scientific lecture

• Irgens, Lorentz (1998). Yrke og reproduksjon. [Invitert foredrag]. (external link)
• Irgens, Lorentz (1998). Nytt meldeskjema for MFR. (external link)
• Irgens, Lorentz (1998). Caesarean section in Norway. [Invitert foredrag]. (external link)
• Irgens, Lorentz (1998). Arbeid og reproduksjonsutfall. [Invitert foredrag]. (external link)
• Irgens, Lorentz (1998). Bakgrunn for Sunnhetsloven og et forebyggende helsevesen. Invitert foredrag. (external link)
• Irgens, Lorentz (1998). Nytt meldeskjema for MFR. (external link)
• Irgens, Lorentz (1998). Diabetes in pregnancy and perinatal outcome. [Invitert foredrag]. (external link)
• Irgens, Lorentz (1998). Hva kan MFR bidra med ved miljøstudier av diabetes. (external link)
• Irgens, Lorentz (1998). Nytt meldeskjema for MFR, nye muligheter for forskning og kvalitetssikring. (external link)
• Irgens, Lorentz (1998). Nytt meldeskjema for MFR. (external link)
• Irgens, Lorentz (1998). Lepra i Norge. [Invitert foredrag]. (external link)

Compendium

• Østvold, Terje; Løvland, Jørgen; Irgens, L. M. et al. (1994). Applied chemical thermodynamics. (external link)

See a complete overview of publications in Cristin.