Updated list of publications on PubMed, please click the link below:

https://www.ncbi.nlm.nih.gov/myncbi/16uVRzeeBPOkH/bibliography/public/

Poster

• Rogde, Aase Johnsen; Kvidaland, Haakon Kristian; Lehmann, Sverre et al. (2025). Exercise-induced laryngeal obstruction in a hospital-based cohort with asthma. (external link)
• Solli, Petrine Veierød; Muralitharan, Praveen; Veseth, Sivert H. et al. (2025). A randomized controlled trial (RCT), adding inspiratory muscle training to standard treatment for exercise-induced laryngeal obstruction (EILO). (external link)
• Andersen, Tiina; Brekka, Anne Kristine; Fretheim-Kelly, Zoe et al. (2024). Upper airway and translaryngeal resistance during mechanical insufflation-exsufflation. (external link)
• Brekka, Anne Kristine; Ntoumenopoulos, George; Røksund, Ola Drange et al. (2023). Strupens responser under non-invasiv ventilasjonsstøtte hos friske frivillige. (external link)
• Engan, Mette; Engeset, Merete Salveson; Engesæter, Ingvild Øvstebø et al. (2020). Prevalence and consequences of left vocal cord paralysis in young adults born extremely premature with a history of neonatal patent ductus arteriosus surgery. (external link)
• Engeseth, Merete Salveson; Røksund, Ola Drange; Vollsæter, Maria et al. (2016). Respiratory morbidity in extremely premature born children and later physical Activity.. (external link)
• Andersen, Tiina Maarit; Sandnes, Astrid; Brekka, Anne Kristine et al. (2015). Hvordan reagerer strupen ved bruk av hostemaskin hos personer med amyotrofisk lateral sklerose?. (external link)
• Sandnes, Astrid; Andersen, Tiina Maarit; Vollsæter, Maria et al. (2015). Lung function and respiratory muscle strength in Amyotrophic Lateral Sclerosis.. (external link)
• Andersen, Tiina Maarit; Sandnes, Astrid; Vollsæter, Maria et al. (2015). Measurement of vital capacity in Amyotrophic Lateral Sclerosis – forced and slowly performed.. (external link)
• Engeseth, Merete Salveson; Clemm, Hege Synnøve Havstad; Røksund, Ola Drange et al. (2015). Better respiratory outcomes for extremely preterm born children.. (external link)
• Andersen, Tiina Maarit; Sandnes, Astrid; Brekka, Anne Kristine et al. (2015). Laryngeal response patterns to mechanical assisted cough in Amyotrophic Lateral Sclerosis.. (external link)
• Andersen, Tiina Maarit; Sandnes, Astrid; Brekka, Anne Kristine et al. (2015). Laryngeal response patterns to mechanical insufflation-exsufflation in amyotrophic lateral sclerosis.. (external link)
• Vollsæter, Maria; Clemm, Hege Synnøve Havstad; Thorsen, Einar et al. (2014). Alveolar nitric oxide(NO)in children born extremely preterm (EP).. (external link)
• Campos, Carolina; Røksund, Ola Drange; Vollsæter, Maria et al. (2014). Exercise induced inspiratory symptoms. (external link)
• Vollsæter, Maria; Clemm, Hege Synnøve Havstad; Heimdal, John-Helge et al. (2014). Spirometry- a tool for diagnosing exercise induced laryngeal obstruction (EILO)?. (external link)
• Clemm, Hege Synnøve Havstad; Vollsæter, Maria; Hilland, Magnus et al. (2014). Exercise induced laryngeal obstruction(EILO)diagnosed with laryngoscopy during rest or during exercise?. (external link)
• Vollsæter, Maria; Clemm, Hege Synnøve Havstad; Heimdal, John-Helge et al. (2014). Exercise Induced Inspiratory Stridor (EIIS) - A growing Challenge during Physical activity. (external link)
• Clemm, Hege Synnøve Havstad; Vollsæter, Maria; Røksund, Ola Drange et al. (2014). Exercise induced inspiratory stridor (EIIS) in athletes. (external link)

Academic article

• Sørensen, Karen Galta; Øymar, Knut Asbjørn Alexander; Dalen, Ingvild et al. (2025). Bronchial hyper-reactivity in young adults after hospitalisation for bronchiolitis in infancy. (external link)
• Brekka, Anne Kristine; Vollsæter, Maria; Fretheim-Kelly, Zoe et al. (2025). Exploring upper airway and laryngeal resistance to noninvasive ventilation in healthy awake adults. (external link)
• Vreim, Kristine; Karlsen, Tom; Carlsen, Petter et al. (2025). Speech therapy for exercise-induced laryngeal obstruction. (external link)
• Andersen, Tiina Maarit; Brekka, Anne Kristine; Fretheim-Kelly, Zoe et al. (2025). Upper Airway and Translaryngeal Resistance During Mechanical Insufflation-Exsufflation. (external link)
• Carlsen, Petter; Muralitharan, Praveen; Fenne, Hilde et al. (2024). Laryngeal response to high-intensity exercise in healthy athletes. (external link)
• Lillebøe, Henriette Lahn-Johannessen; Engeseth, Merete Salveson; Clemm, Hege Synnøve Havstad et al. (2024). Expiratory airflow limitation in adults born extremely preterm: A systematic review and meta-analysis. (external link)
• Karlsen, Tom Hemming; Vreim, Kristine; Røksund, Ola Drange et al. (2024). A speech therapy treatment protocol for exercise induced laryngeal obstruction. (external link)
• Bårdsen, Tonje; Satrell, Emma; Røksund, Ola Drange et al. (2024). Lung function outcomes in adults born extremely preterm across three decades of advancing perinatal medicine. (external link)
• Benestad, Merete; Drageset, Jorunn; Vollsæter, Maria et al. (2024). Health-related quality of life in two birth cohorts of extremely preterm born adults. (external link)
• Brekka, Anne Kristine; Ntoumenopoulos, George; Røksund, Ola Drange et al. (2024). Use of Laryngeal Ultrasound to Observe Laryngeal Movements During Noninvasive Ventilation in Healthy Volunteers. (external link)
• Tveiten, Lars; Diep, Lien My; Halvorsen, Thomas et al. (2024). Normal range and risk factors for deviating body temperatures during the first 24 hours in term-born infants under standardised care: an observational study. (external link)
• Leong, Paul; Vertigan, Anne E.; Hew, Mark et al. (2023). Diagnosis of vocal cord dysfunction/inducible laryngeal obstruction: an International Delphi Consensus Study. (external link)
• Budal, Elisabeth Berge; Bentsen, Mariann; Kessler, Jørg et al. (2023). Histologic chorioamnionitis in extremely preterm births, microbiological findings and infant outcome. (external link)
• Muralitharan, Praveen; Carlsen, Petter; Hilland, Magnus et al. (2023). Use of inhaled ipratropium bromide to improve exercise-induced laryngeal obstruction cannot be recommended. (external link)
• Rogde, Åse Johnsen; Lehmann, Sverre; Halvorsen, Thomas et al. (2023). Prevalence and impact of exercise-induced laryngeal obstruction in asthma: a study protocol for a cross-sectional and longitudinal study. (external link)
• Sørensen, Karen Galta; Øymar, Knut Asbjørn Alexander; Dalen, Ingvild et al. (2023). Blood eosinophils during bronchiolitis: Associations with atopy, asthma and lung function in young adults. (external link)
• Fretheim-Kelly, Zoe; Clemm, Hege Synnøve Havstad; Røksund, Ola Drange et al. (2023). Translaryngeal Resistance: A Measurement to Assist Decision Making in Upper Airway Pathology. (external link)
• Sørensen, Karen Galta; Øymar, Knut Asbjørn Alexander; Jonsson, Grete et al. (2023). Are BMI and adipokines associated with asthma, atopy and lung function in young adults previously hospitalized for bronchiolitis?. (external link)
• Sørensen, Karen Galta; Øymar, Knut Asbjørn Alexander; Dalen, Ingvild et al. (2022). Asthma, atopy and lung function in young adults after hospitalisation for bronchiolitis in infancy: Impact of virus and sex. (external link)
• Bernhardsen, Guro Pauck; Stang, Julie; Halvorsen, Thomas et al. (2022). Differences in lung function, bronchial hyperresponsiveness and respiratory health between elite athletes competing in different sports. (external link)
• Benestad, Merete; Drageset, Jorunn; Eide, Geir Egil et al. (2022). Development of health-related quality of life and subjective health complaints in adults born extremely preterm: a longitudinal cohort study. (external link)
• Benestad, Merete; Drageset, Jorunn; Hufthammer, Karl Ove et al. (2022). Long-term follow-up of self-reported mental health and health-related quality of life in adults born extremely preterm. (external link)
• Halvorsen, Thomas; Røksund, Ola Drange (2022). A novel validated tool to score symptom burden in exercise-induced laryngeal obstruction: can we simplify patient follow-up and research?. (external link)
• Engan, Mette; Engeset, Merete Salveson; Sandvik, Lorentz et al. (2022). Left vocal cord paralysis, lung function and exercise capacity in young adults born extremely preterm with a history of neonatal patent ductus arteriosus surgery—A national cohort study. (external link)
• Andersen, Tiina Maarit; Fondenes, Ove; Røksund, Ola Drange et al. (2022). From bedside to bench - In vivo and in vitro evaluation of mechanically assisted cough treatment in a patient with bulbar Amyotrophic Lateral Sclerosis. (external link)
• Brekka, Anne Kristine; Vollsæter, Maria; Ntoumenopoulos, George et al. (2022). Adjustments of non-invasive ventilation and mechanically assisted cough by combining ultrasound imaging of the larynx with transnasal fibre-optic laryngoscopy: A protocol for an experimental study. (external link)
• Ekanger, Camilla Tvedt; Zhou, Fan; Bohan, Dana et al. (2022). Human organotypic airway and lung organoid cells of bronchiolar and alveolar differentiation are permissive to infection by influenza and SARS-CoV-2 respiratory virus. (external link)
• Jansrud, Ida; Halvorsen, Thomas; Vollsæter, Maria et al. (2022). Conundrums in the breathless athlete; exercise-induced laryngeal obstruction or asthma?. (external link)
• Fretheim-Kelly, Zoe; Engan, Mette; Clemm, Hege Synnøve Havstad et al. (2022). Reliability of translaryngeal airway resistance measurements during maximal exercise. (external link)
• Bårdsen, Tonje; Røksund, Ola Drange; Benestad, Merete et al. (2022). Tracking of lung function from 10 to 35 years after being born extremely preterm or with extremely low birth weight. (external link)
• Clemm, Hege Synnøve Havstad; Røksund, Ola Drange; Andersen, Tiina Maarit et al. (2022). Exercise-induced Laryngeal Obstruction: Protocol for a Randomized Controlled Treatment Trial. (external link)
• Mikalsen, Ingvild Bruun; Halvorsen, Thomas; Juliusson, Pétur Benedikt et al. (2021). Early life growth and associations with lung function and bronchial hyperresponsiveness at 11-years of age. (external link)
• Lie, Astrid Haugen; Grønnevik, Ingvild; Frisk, Bente et al. (2021). Breathing patterns in people with exercise-induced laryngeal obstruction. (external link)
• Sandnes, Astrid; Andersen, Tiina Maarit; Clemm, Hege Synnøve Havstad et al. (2021). Clinical responses following inspiratory muscle training in exercise-induced laryngeal obstruction. (external link)
• Engan, Mette; Jansrud, Ida; Bekken, Marianne et al. (2021). Reliability of maximum oxygen uptake in cardiopulmonary exercise testing with continuous laryngoscopy. (external link)
• Sentenac, Marianne; Benhammou, Valerie; Aden, Ulrika et al. (2021). Maternal education and cognitive development in 15 European very-preterm birth cohorts from the RECAP Preterm platform. (external link)
• Satrell, Emma Elsa Carolina; Clemm, Hege Synnøve Havstad; Røksund, Ola Drange et al. (2021). Development of lung diffusion to adulthood following extremely preterm birth. (external link)
• Kuiper, Ingrid Nordeide; Svanes, Cecilie; Markevych, Iana et al. (2021). Lifelong exposure to air pollution and greenness in relation to asthma, rhinitis and lung function in adulthood. (external link)
• Rogde, Åse Johnsen; Lehmann, Sverre; Clemm, Hege Synnøve Havstad et al. (2021). Inducible laryngeal obstruction in asthma. (external link)
• Zanden, Tjitske M. van der; Mooij, Miriam G.; Vet, Nienke J. et al. (2021). Benefit-Risk Assessment of Off-Label Drug Use in Children: The Bravo Framework. (external link)
• Benestad, Merete Røineland; Drageset, Jorunn; Clemm, Hege Synnøve Havstad et al. (2021). Self-Reported Health in Adolescents With Exercise-Induced Laryngeal Obstruction; A Cross-Sectional Study. (external link)
• Budal, Elisabeth Berge; Ebbing, Cathrine; Kessler, Jørg et al. (2021). Placental histology predicted adverse outcomes in extremely premature neonates in Norway-population-based study. (external link)
• Hoareau, Laurence; Engelsen, Agnete; Aanerud, Marianne et al. (2021). Induction of alveolar and bronchiolar phenotypes in human lung organoids. (external link)
• Duijts, Liesbeth; Meel, Evelien R. van; Moschino, Laura et al. (2020). European Respiratory Society guideline on long-term management of children with bronchopulmonary dysplasia. (external link)
• Tveiten, Lars; Diep, Lien My; Halvorsen, Thomas et al. (2020). Heart rate during the first 24 hours in term-born infants. (external link)
• Kuiper, Ingrid Nordeide; Markevych, Iana; Accordini, Simone et al. (2020). Associations of preconception exposure to air pollution and greenness with offspring asthma and hay fever. (external link)
• Engeseth, Merete Salveson; Engan, Mette; Clemm, Hege Synnøve Havstad et al. (2020). Voice and Exercise Related Respiratory Symptoms in Extremely Preterm Born Children After Neonatal Patent Ductus Arteriosus. (external link)
• Sautter, Marie; Halvorsen, Thomas; Engan, Mette et al. (2020). Electromagnetic inductance plethysmography to study airflow after nebulized saline in bronchiolitis. (external link)
• Engan, Mette; Engeseth, Merete Salveson; Fevang, Silje Katrine Elgen et al. (2020). Predicting physical activity in a national cohort of children born extremely preterm. (external link)
• Fretheim-Kelly, Zoe; Halvorsen, Thomas; Heimdal, John-Helge et al. (2019). Feasibility and tolerability of measuring translaryngeal pressure during exercise. (external link)
• Sandnes, Astrid; Andersen, Tiina Maarit; Clemm, Hege Synnøve Havstad et al. (2019). Exercise-induced laryngeal obstruction in athletes treated with inspiratory muscle training. (external link)
• Stangenes, Kristine Marie; Hysing, Mari; Elgen, Irene Bircow et al. (2019). Sleep problems, behavioural problems and respiratory health in children born extremely preterm: a parental questionnaire study. (external link)
• Sandnes, Astrid; Hilland, Magnus; Vollsæter, Maria et al. (2019). Severe exercise-induced laryngeal obstruction treated with supraglottoplasty. (external link)
• Sørensen, Karen Galta; Øymar, Knut; Dalen, Ingvild et al. (2019). Lung function and bronchial hyper-reactivity from 11 to 18 years in children with bronchiolitis in infancy. (external link)
• Engan, Mette; Vollsæter, Maria; Øymar, Knut et al. (2019). Comparison of physical activity and body composition in a cohort of children born extremely preterm or with extremely low birth weight to matched term-born controls: a follow-up study. (external link)
• Andersen, Tiina Maarit; Halvorsen, Thomas; Fondenes, Ove et al. (2019). Larynx: The Complex Gateway to the Lungs. (external link)
• Doyle, Lex W.; Andersson, Sture; Bush, Andy et al. (2019). Expiratory airflow in late adolescence and early adulthood in individuals born very preterm or with very low birthweight compared with controls born at term or with normal birthweight: a meta-analysis of individual participant data.. (external link)
• Naumburg, Estelle; Rane, Anders; Halvorsen, Thomas et al. (2019). Tardy development of safe medicines for children: a Nordic network offers new platform to reduce this inequity. (external link)
• Kotecha, Sailesh; Clemm, Hege Synnøve Havstad; Halvorsen, Thomas et al. (2018). Bronchial hyper-responsiveness in preterm-born subjects: A systematic review and meta-analysis. (external link)
• Clemm, Hege Synnøve Havstad; Sandnes, Astrid; Vollsæter, Maria et al. (2018). The Heterogeneity of Exercise-induced Laryngeal Obstruction.. (external link)
• Stangenes, Kristine Marie; Hysing, Mari; Fevang, Silje Katrine Elgen et al. (2018). Prenatal and neonatal factors predicting sleep problems in children born extremely preterm or with extremely low birthweight. (external link)
• Skromme, Kaia; Vollsæter, Maria; Øymar, Knut et al. (2018). Respiratory morbidity through the first decade of life in a national cohort of children born extremely preterm. (external link)
• Vollsæter, Maria; Halvorsen, Thomas; Markestad, Trond et al. (2018). Renal function and blood pressure in 11 year old children born extremely preterm or small for gestational age. (external link)
• Andersen, Tiina Maarit; Sandnes, Astrid; Fondenes, Ove et al. (2018). Laryngeal responses to mechanically assisted cough in progressing amyotrophic lateral sclerosis. (external link)
• Bentsen, Mariann; Markestad, Trond; Halvorsen, Thomas (2018). Ventilator flow data predict bronchopulmonary dysplasia in extremely premature neonates. (external link)
• Halvorsen, Thomas; Walsted, Emil Schwarz; Bucca, Caterina et al. (2017). Inducible laryngeal obstruction: An official joint European Respiratory Society and European Laryngological Society statement. (external link)
• Hestnes, Julie; Hoel, Hedda Benedicte; Risa, Ole Johan et al. (2017). Ventilatory efficiency in children and adolescents born extremely preterm. (external link)
• Bentsen, Mariann; Markestad, Trond; Øymar, Knut et al. (2017). Lung function at term in extremely preterm-born infants: A regional prospective cohort study. (external link)
• Bentsen, Mariann; Satrell, Emma; Reigstad, Hallvard et al. (2017). Mid-childhood outcomes after pre-viable preterm premature rupture of membranes. (external link)
• Monsen, Anne Lise Bjørke; Vollsæter, Maria; Ueland, Per Magne et al. (2016). Increased bronchial hyperresponsiveness and higher asymmetric dimethylarginine levels after fetal growth restriction. (external link)
• Tveiten, Lars; Diep, Lien My; Halvorsen, Thomas et al. (2016). Respiratory rate during the first 24 hours of life in healthy term infants. (external link)
• Røksund, Ola Drange; Heimdal, John-Helge; Clemm, Hege Synnøve Havstad et al. (2016). Exercise inducible laryngeal obstruction: diagnostics and management. (external link)
• Andersen, Tiina Maarit; Sandnes, Astrid; Brekka, Anne Kristine et al. (2016). Laryngeal response patterns influence the efficacy of mechanical assisted cough in amyotrophic lateral sclerosis. (external link)
• Bentsen, Mariann; Eriksen, Morten; Olsen, Merete Susan et al. (2016). Electromagnetic inductance plethysmography is well suited to measure tidal breathing in infants. (external link)
• Hilland, Magnus; Røksund, Ola Drange; Sandvik, Lorentz et al. (2016). Congenital laryngomalacia is related to exerciseinduced laryngeal obstruction in adolescence. (external link)
• Vollsæter, Maria; Skromme, Kaia; Satrell, Emma Elsa Carolina et al. (2015). Children born preterm at the turn of the millennium had better lung function than children born similarly preterm in the early 1990s. (external link)
• Vollsæter, Maria; Clemm, Hege Synnøve Havstad; Satrell, Emma Elsa Carolina et al. (2015). Adult respiratory outcomes of extreme preterm birth. A regional cohort study.. (external link)
• Båtsvik, Berit; Vederhus, Bente Johanne; Halvorsen, Thomas et al. (2015). Health-related quality of life may deteriorate from adolescence to young adulthood after extremely preterm birth. (external link)
• Bentsen, Mariann; Haaland, Øystein Ariansen; Lønning, Lise Broll et al. (2015). A new non-invasive method of infant spirometry demonstrates a level of repeatability that is comparable to traditional methods. (external link)
• Clemm, Hege Synnøve Havstad; Vollsæter, Maria; Røksund, Ola Drange et al. (2015). Adolescents who were born extremely preterm demonstrate modest decreases in exercise capacity. (external link)
• Vederhus, Bente Johanne; Eide, Geir Egil; Natvig, Gerd Karin et al. (2015). Health-related quality of life and emotional and behavioral difficulties after extreme preterm birth: Developmental trajectories. (external link)
• Norlander, Katarina; Christensen, Pernille M.; Maat, Robert et al. (2015). Comparison between two assessment methods for exercise-induced laryngeal obstructions. (external link)
• Clemm, Hege Synnøve Havstad; Vollsæter, Maria; Røksund, Ola Drange et al. (2014). Exercise capacity after extremely preterm birth: Development from adolescence to adulthood. (external link)
• Mikalsen, Ingvild Bruun; Halvorsen, Thomas; Øymar, Knut (2014). Blood eosinophil counts during bronchiolitis are related to bronchial hyper-responsiveness and lung function in early adolescence. (external link)
• Røksund, Ola Drange; Heimdal, John-Helge; Olofsson, Jan et al. (2014). Larynx during exercise: the unexplored bottleneck of the airways. (external link)
• Satrell, Emma; Røksund, Ola Drange; Thorsen, Einar et al. (2013). Pulmonary gas transfer in children and adolescents born extremely preterm. (external link)
• Mikalsen, Ingvild Bruun; Halvorsen, Thomas; Eide, Geir Egil et al. (2013). Severe bronchiolitis in infancy: Can asthma in adolescence be predicted?. (external link)
• Mikalsen, Ingvild Bruun; Halvorsen, Thomas; Øymar, Knut (2013). Exhaled nitric oxide is related to atopy, but not asthma in adolescents with bronchiolitis in infancy. (external link)
• Andersen, Tiina Maarit; Sandnes, Astrid; Hilland, Magnus et al. (2013). Laryngeal response patterns to mechanical insufflation-exsufflation in healthy subjects. (external link)
• Bjørke-Monsen, Anne Lise; Halvorsen, Thomas; Midttun, Øyvind et al. (2013). Increased inflammatory markers in adolescents born extremely preterm and small for gestational age. (external link)
• Vollsæter, Maria; Røksund, Ola Drange; Eide, Geir Egil et al. (2013). Lung function after preterm birth: development from mid-childhood to adulthood. (external link)
• Sandnes, Astrid; Andersen, Tiina Maarit; Hilland, Magnus et al. (2013). Laryngeal movements during inspiratory muscle training in healthy subjects. (external link)
• Havstad, Hege Synnøve; Røksund, Ola Drange; Thorsen, Einar et al. (2012). Aerobic capacity and exercise performance in young people born extremely preterm. (external link)
• Mikalsen, Ingvild Bruun; Halvorsen, Thomas; Øymar, Knut (2012). The outcome after severe bronchiolitis is related to gender and virus. (external link)
• Vederhus, Bente Johanne; Eide, Geir Egil; Natvig, Gerd Karin et al. (2012). Pain tolerance and pain perception in adolescents born extremely preterm. (external link)
• Maat, Robert; Hilland, Magnus; Røksund, Ola Drange et al. (2011). Exercise-induced laryngeal obstruction: natural history and effect of surgical treatment. (external link)
• Røksund, Ola Drange; Havstad, Hege Synnøve; Heimdal, John-Helge et al. (2010). Left vocal cord paralysis after extreme preterm birth, a new clinical scenario in adults. (external link)
• Vederhus, Bente Johanne; Markestad, Trond; Eide, Geir Egil et al. (2010). Health related quality of life after extremely preterm birth: a matched controlled cohort study. (external link)
• Kaarbø, Mari; Mikkelsen, Øyvind Løveseter; Malerød, Lene et al. (2010). PI3K-AKT-mTOR pathway is dominant over androgen receptor signaling in prostate cancer cells. (external link)
• Maat, Robert; Røksund, Ola Drange; Halvorsen, Thomas et al. (2009). Audiovisual assessment of exercise-induced laryngeal obstruction: reliability and validity of observations. (external link)
• Røksund, Ola Drange; Maat, Robert; Heimdal, John-Helge et al. (2009). Exercise induced dyspnea in the young. Larynx as the bottleneck of the airways. (external link)
• Aukland, Stein Magnus; Rosendahl, Karen; Owens, Catherine M. et al. (2009). Neonatal bronchopulmonary dysplasia predicts abnormal pulmonary HRCT scans in long-term survivors of extreme preterm birth. (external link)
• Downham, Esther; Winterthun, Synnøve; Nakkestad, Hanne Linda et al. (2008). A novel mitochondrial ND5 (MTND5) gene mutation giving isolated exercise intolerance. (external link)
• Heimdal, John-Helge; Røksund, Ola Drange; Halvorsen, Thomas et al. (2007). Continuous Laryngoscopy Exercise Test: A Method for Visualizing Laryngeal Dysfunction During Exercise (Letter). (external link)
• Maat, Robert; Røksund, Ola Drange; Olofsson, Jan et al. (2007). Surgical treatment of exercise-induced laryngeal dysfunction. (external link)
• Aukland, Stein Magnus; Halvorsen, Thomas; Fosse, Kari et al. (2006). High-resolution CT of the chest in children and young adults who were born prematurely: Findings in a population-based study. (external link)
• Heimdal, John-Helge; Røksund, Ola Drange; Halvorsen, Thomas et al. (2006). Continuous laryngoscopy exercise test: a method for visualizing laryngeal dysfunction during exercise. (external link)
• Øymar, Knut; Halvorsen, Thomas; Aksnes, Lage (2006). Mast cell activation and leukotriene secretion in wheezing infants. Relation to respiratory syncytial virus and outcome. (external link)
• Halvorsen, Thomas; Skadberg, Britt Torunn; Eide, Geir Egil et al. (2006). Better care of immature infants; Has it influenced long-term pulmonary outcome?. (external link)
• Halvorsen, Thomas; Skadberg, Britt Torunn; Eide, Geir Egil et al. (2005). Assessment of lung volumes in children and adolescents: comparison of two plethysmographic techniques. (external link)
• Halvorsen, Thomas; Skadberg, Brit; Eide, Geir Egil et al. (2005). Characteristics of asthma and airway hyper-responsiveness after premature birth. (external link)
• Halvorsen, Thomas; Skadberg, Britt Torunn; Eide, Geir Egil et al. (2004). Pulmonary outcome in adolescents of extreme preterm birth: a regional cohort study. (external link)
• Øymar, Knut; Havnen, Jakob; Halvorsen, Thomas et al. (2001). Eosinophil counts and urinary eosinophil protein X in children hospitalized for wheezing during the first year of life: prediction of recurrent wheezing. (external link)
• Halvorsen, Thomas; Valvatne, Håvard; Grewal, Harleen et al. (1997). Expression of colonization factor I fimbriae by enterotoxigenic Escherichia coli; influence of growth conditions and a recombinant positive regulatory gene. (external link)

Academic lecture

• Brekka, Anne Kristine; Solli, Petrine Veierød; Indrekvam, Solfrid et al. (2025). Laryngeal ultrasound to observe laryngeal movements during non-invasive ventilation in COPD. (external link)
• Brekka, Anne Kristine; Indrekvam, Solfrid; Solli, Petrine Veierød et al. (2024). Laryngeal observations during non-invasive ventilation titration in chronic obstructive pulmonary disease. (external link)
• Engeseth, Merete Salveson; Engan, Mette; Clemm, Hege Synnøve Havstad et al. (2019). Respiratory- and voice symptoms among extremely preterm born children with prolonged ventilator dependency. A Norwegian national cohort study.. (external link)
• Engeseth, Merete Salveson; Maeland, Silje; Vollsæter, Maria et al. (2018). Symptoms of vocal cord paresis among children born extremely premature with- or without a PDA ligation.. (external link)
• Jansrud, Ida; Bovim, Lars Peder Vatshelle; Vollsæter, Maria et al. (2018). Is continuous laryngoscopy during cardiopulmonary exercise testing reliable for measuring maximum oxygen uptake?. (external link)
• Halvorsen, Thomas (2010). Respiratory follow-up of the grown preterm. (external link)
• Halvorsen, Thomas (2007). Exercise induced Vocal Cord Dysfunction. (external link)
• Halvorsen, Thomas (2007). Lung sequelae after preterm birth. (external link)
• Halvorsen, Thomas (2007). Exercise induced Vocal Cord Dysfunction. (external link)
• Halvorsen, Thomas (2005). Exercise-induced vocal cord dysfunction. (external link)
• Halvorsen, Thomas (2003). Exercise induced stridor: Visualising the problem. (external link)
• Halvorsen, Thomas (2003). Obstructive pulmonary disease and physical activity in childhood. (external link)

Academic literature review

• Fitzgerald, H.T.; Halvorsen, Thomas; Engan, Mette et al. (2025). Exercise capacity and the psychosocial effect in preterm born infants – Should we do more?. (external link)
• Simpson, Shannon J; Berry, Cassidy Du; Evans, Denby J et al. (2023). Unravelling the respiratory health path across the lifespan for survivors of preterm birth. (external link)
• Clemm, Hege Synnøve Havstad; Olin, J Tod; McIntosh, Cameron et al. (2022). Exercise-induced laryngeal obstruction (EILO) in athletes: a narrative review by a subgroup of the IOC Consensus on 'acute respiratory illness in the athlete'. (external link)
• Vollsæter, Maria; Stensrud, Trine; Maat, Robert et al. (2022). Exercise related respiratory problems in the young—Is it exercise-induced bronchoconstriction or laryngeal obstruction?. (external link)
• Male, Christoph; Neubert, Antje; Grytli, Helene Hartvedt et al. (2022). Evidence-based off-label use of drugs for children and adolescents: International consortium of pediatric formularies providing the best-available evidence. (external link)
• Andersen, Tiina Maarit; Hov, Brit; Halvorsen, Thomas et al. (2021). Upper Airway Assessment and Responses During Mechanically Assisted Cough.. (external link)
• Fretheim-Kelly, Zoe Louise; Halvorsen, Thomas; Clemm, Hege Synnøve Havstad et al. (2019). Exercise induced laryngeal obstructions in humans and equines. A comparative review. (external link)
• Clemm, Hege Synnøve Havstad; Engeseth, Merete Salveson; Vollsæter, Maria et al. (2018). Bronchial hyper-responsiveness after preterm birth. (external link)
• Røksund, Ola Drange; Olin, James Tod; Halvorsen, Thomas (2018). Working towards a common transatlantic approach for evaluation of exercise-induced laryngeal obstruction. (external link)
• Engeseth, Merete Salveson; Olsen, Nina Rydland; Mæland, Silje et al. (2017). Left vocal cord paralysis after patent ductus arteriosus ligation: A systematic review. (external link)
• Engeseth, Merete Salveson; Olsen, Nina Rydland; Røksund, Ola Drange et al. (2016). A systematic review and meta-analysis: Prevalence and consequences of left recurrent laryngeal nerve paresis following surgical ligation of patent ductus arteriosus in extremely premature infants. PROSPERO 2016:CRD42016029921 Available from http://www.crd.york.ac.uk/PROSPERO_REBRANDING/display_record.asp?ID=CRD42016029921. (external link)
• Christensen, Pernille M.; Heimdal, John-Helge; Christopher, Kent L. et al. (2015). ERS/ELS/ACCP 2013 international consensus conference nomenclature on inducible laryngeal obstructions. (external link)
• Skromme, Kaia; Leversen, Katrine Tyborg; Eide, Geir Egil et al. (2015). Respiratory illness contributed significantly to morbidity in children born extremely premature or with extremely low birthweights in 1999-2000. (external link)
• Heimdal, John-Helge; Halvorsen, Thomas; Maat, Robert et al. (2011). Exercise Induced Laryngeal Obstruction (EILO): Diagnosis and Management. (external link)
• Øymar, Knut; Halvorsen, Thomas (2009). Emergency presentation and management of acute severe asthma in children. (external link)

Editorial

• Halvorsen, Thomas (2024). Ambient Air Pollution and Morbidities in Bronchopulmonary Dysplasia; It’s All about the Money. (external link)
• Halvorsen, Thomas (2018). Our tiny preemies: What will become of their future pulmonary health?. (external link)

Reader opinion piece

• Sørensen, Karen Galta; Øymar, Knut Asbjørn Alexander; Halvorsen, Thomas et al. (2023). Blood eosinophils during bronchiolitis were not associated with adult asthma in a Norwegian cohort study. (external link)
• Bårdsen, Tonje; Røksund, Ola Drange; Eagan, Tomas Mikal Lind et al. (2023). Impaired Lung Function in Extremely Preterm-Born Adults in Their Fourth Decade of Life. (external link)
• Leong, Paul; Hull, James H.; Gibson, Peter G. et al. (2023). Reply. (external link)
• Sørensen, Karen Galta; Øymar, Knut Asbjørn Alexander; Halvorsen, Thomas et al. (2020). Reply to Korppi and Riikonen. (external link)
• Andersen, Tiina Maarit; Sandnes, Astrid; Fondenes, Ove et al. (2018). Laryngoscopy Can Be a Valuable Tool for Unexpected Therapeutic Response in Noninvasive Respiratory Interventions.. (external link)
• Øymar, Knut; Mikalsen, Ingvild Bruun; Nag, Torbjørn et al. (2017). Systemiske steroider til førskolebarn med symptomer fra nedre luftveier. (external link)
• Mikalsen, Ingvild Bruun; Halvorsen, Thomas; Øymar, Knut (2013). The optimal management for patients (Letter). (external link)
• Halvorsen, Thomas; Røksund, O.D.; Heimdal, John-Helge et al. (2011). Larynx in exercising humans; the unexplored bottleneck of the airways (Letter). (external link)
• Halvorsen, Thomas; Røksund, Ola Drange; Maat, Robert et al. (2011). Use of Post-Exercise Laryngoscopy to Evaluate Exercise Induced Dyspnea (Letter). (external link)

Doctoral dissertation

• Fretheim-Kelly, Zoe; Strand, Eric; Fintl, Constanze et al. (2021). From horses to humans : a comparative study developing the first protocol for measuring upper airway pressures in exercising humans. (external link)
• Andersen, Tiina Maarit; Røksund, Ola Drange; Halvorsen, Thomas et al. (2018). Laryngeal response patterns during mechanically assisted cough in Amyotrophic Lateral Sclerosis. (external link)
• Bentsen, Mariann; Halvorsen, Thomas; Markestad, Trond et al. (2018). Tidal breathing parameters in extremely premature infants. Feasibility and clinical utility of electromagnetic inductance plethysmography. (external link)
• Vollsæter, Maria; Halvorsen, Thomas (2016). Long-term Respiratory Outcomes of Extreme Preterm Birth. A regional cohort study. (external link)
• Clemm, Hege Synnøve Havstad; Halvorsen, Thomas; Markestad, Trond et al. (2015). Exercise Capacity after Extremely Preterm birth. PhD Thesis. (external link)
• Clemm, Hege Synnøve Havstad; Halvorsen, Thomas (2015). Exercise Capacity after extremely preterm birth. Development from childhood to adulthood. (external link)
• Halvorsen, Thomas (2006). Lung sequelae after premature birth. A population based, controlled, long-term cohort study (dissertation). (external link)

Article in business/trade/industry journal

• Røksund, Ola Drange; Halvorsen, Thomas; Heimdal, John-Helge (2018). Heterogeniteten ved anstrengelsesutløst laryngeal obstruksjon. (external link)
• Røksund, Ola Drange; Heimdal, John-Helge; Halvorsen, Thomas (2016). Anstrengelsesutløst laryngeal obstruksjon - diagnostikk og behandling. (external link)

Interview

• Halvorsen, Thomas; Tøndel, Camilla (2014). Forskning på legemidler til barn må gjøres i Norge. (external link)

See a complete overview of publications in Cristin.

Updated list of publications on PubMed, please click the link below:

https://www.ncbi.nlm.nih.gov/myncbi/16uVRzeeBPOkH/bibliography/public/