Academic article

• R. Weberg; C. Bank; K. Berstad et al. (1992). Treatment of Helicobacer pylori in Peptic Ulcer Disease. (external link)
• Ingvard Wilhelmsen; Tone Tangen Haug; P. Sipponen et al. (1994). Helicobacter pylori in functional dyspepsia and normal controls. (external link)
• A. Berstad; Trygve Hausken; Odd Helge Gilja et al. (1996). Review: Gastric accommodation in functional dyspepsia. (external link)
• A. Berstad; S. Olafsson; S. Tefera et al. (1996). Bismuth therapy for Helicobacter pylori infection. A review of five years' experience at a university hospital in Norway. (external link)
• Ingvard Wilhelmsen (1994). Psykologiske faktorer ved magesår. (external link)
• Ingvard Wilhelmsen (1994). Studie av pasienter med ulcus duodeni og funksjonell dyspepsi. (external link)
• Arnold Berstad; JG Hatlebakk; Ingvard Wilhelmsen et al. (1995). Follow-up on 242 patients with peptic ulcer disease one year after eradication of Helicobacter pylori infection. (external link)
• Ingvard Wilhelmsen; TT Haug; Holger Ursin et al. (1995). Discriminant analysis of factors distinguishing patients with functional dyspepsia from patients with duodenal ulcer. (external link)
• Turid Birgitte Boye; Knut E A Lundin; Günter Jantschek et al. (2011). INSPIRE Study: Does stress management improve the course of inflammatory bowel disease and disease-specific quality of life indDistressed patients with ulcerative colitis or Crohn's Disease? A randomized controlled trial. (external link)
• Arnstein Mykletun; Ove Heradstveit; Kari Eriksen et al. (2009). Health anxiety and disability pension award: The HUSK Study. (external link)
• Trygve Hausken; S. Svebak; Ingvard Wilhelmsen et al. (1993). Low vagal tone and antral dysmotility in patients with functional dyspepsia. (external link)
• Ingvard Wilhelmsen (1992). Behandling av magesår med vismutsubnitrat, oksytetracyklin og metronidazol. (external link)
• Ingvard Wilhelmsen; R. Weberg; K. Berstad et al. (1992). Ny behandling av magesår. (external link)
• Tone Tangen Haug; S. Svebak; Trygve Hausken et al. (1992). Personality factors as predictors of stress-related antral motility, vagal activation and symptoms in functional lyspepsia patients. (external link)
• Ingvard Wilhelmsen; August Bakke; Tone Tangen Haug et al. (1994). Psychosocial adjustment to illness scale (PAIS-SR) in a Norwegian material of patients with functional dyspepsia, duodenal ulcer, and urinary bladder dysfunction. (external link)
• Ingvard Wilhelmsen (2000). Brain-gut axis as an example of the bio-psycho-social model. (external link)
• T.T. Haug; S. Svebak; Trygve Hausken et al. (1994). Low vagal activity as mediating mechanism for the relationship between personality factors and gastric symptoms in functional dyspepsia. (external link)
• Ingvard Wilhelmsen; Tone Tangen Haug; P. Sipponen et al. (1994). Helicobacter pylori in functional dyspepsia and normal controls. (external link)
• Odd Helge Gilja; Trygve Hausken; Ingvard Wilhelmsen et al. (1996). Impaired accomodation of the proximal stomach to a meal in functional dyspepsia. (external link)
• Ingvard Wilhelmsen; Sobbie Mulindi; David Sankok et al. (2007). Subjective health complaints are more prevalent in Maasais than in Norwegians. (external link)
• Ingvard Wilhelmsen (2002). Hypokondri og kognitiv terapi. (external link)
• TT Haug; Ingvard Wilhelmsen; Holger Ursin et al. (1995). What are the real problems for patients with functional dyspepsia. (external link)
• T.T Haug; Ingvard Wilhelmsen; Holger Ursin et al. (1995). What are the real problems for patients with functinal dyspepsia?. (external link)
• Solbjørg Makalani Myrtveit; Anja Maria Steinsland Ariansen; Ingvard Wilhelmsen et al. (2013). A population based validation study of self-reported pensions and benefits: the Nord-Trøndelag health study (HUNT). (external link)
• Ingvard Wilhelmsen (2001). Kognitiv terapi ved somatoforme lidelser. (external link)
• Line Iden Berge; Jens Christoffer Skogen; Gerhard Sulo et al. (2016). Health anxiety and risk of ischaemic heart disease: A prospective cohort study linking the Hordaland Health Study (HUSK) with the Cardiovascular Diseases in Norway (CVDNOR) project. (external link)
• Kari-Elise Frøystad Veddegjærde; Jens Christoffer Skogen; Ingvard Wilhelmsen et al. (2025). Mental and somatic health burdens of hypochondriacal disorder in higher education: national study among Norwegian students. (external link)
• Tone Tangen Haug; Ingvard Wilhelmsen (1992). Prosjektet "Kognitiv terapi ved ulcus duodeni og nonulcer dyspepsi". (external link)
• Ingvard Wilhelmsen; J. G. Høyersten (1992). Legetyper - finnes de?. (external link)
• Kari-Elise Frøystad Veddegjærde; Børge Sivertsen; Jens Christoffer Skogen et al. (2020). Long-term effect of cognitive–behavioural therapy in patients with Hypochondriacal Disorder. (external link)
• T.T. Haug; S. Svebak; Ingvard Wilhelmsen et al. (1994). Psychological factors and somatic symptoms in functional dyspepsia: A comparison with duodenal ulcer and healthy controls. (external link)
• Ingvard Wilhelmsen; Jan Gunnar Hatlebakk; Snorri Olafsson et al. (1999). On demand therapy of reflux oesophagitis - a prospective study of symptoms, patient satisfaction and quality of life. (external link)
• T.T. Haug; S. Svebak; Trygve Hausken et al. (1994). Low vagal activity as mediating mechanism for the relationship between personality factors and gastric symptoms in functional dyspepsia. (external link)
• Ingvard Wilhelmsen; A. Berstad (1994). Quality of life and relapse of duodenal ulcer before and after eradication of Helicobacter pylori. (external link)
• Trygve Hausken; S. Svebak; Ingvard Wilhelmsen et al. (1993). Low vagal tone and antral dysmotility in patients with functional dyspepsia. (external link)
• Ingvard Wilhelmsen (2002). Somatization, sensitization, and functional dyspepsia. (external link)
• Ann Elisabeth Ellingsen; Ingvard Wilhelmsen (2002). Sykdomsangst blant medisin- og jusstudenter. (external link)
• Espen Thiis-Evensen; Ingvard Wilhelmsen; Geir S Hoff et al. (1999). The Psychologic Effect of Attending a Screening Program for Colorectal Polyps. (external link)
• Ingvard Wilhelmsen (2000). Brain-gut axis as an example of the bio-psycho-social model. (external link)
• Ingvard Wilhelmsen (2000). The role of psychosocial factors in gastrointestinal disorders. (external link)
• Odd Helge Gilja; Trygve Hausken; Ingvard Wilhelmsen et al. (1997). Dèfaut d'adaptation de l'estomac proximal au repas, dans la dyspepsie fonctionelle. (external link)
• Simon Nygaard Øverland; Marit Knapstad; Ingvard Wilhelmsen et al. (2011). Do gastrointestinal complaints increase the risk for subsequent medically certified long-term sickness absence? The HUSK study. (external link)
• Trygve Hausken; S. Svebak; Ingvard Wilhelmsen et al. (1991). Stress-related antral motility in healthy persons and in non-ulcer dyspepsia patients: The signinficance of symphatetic and vagal tone. (external link)
• Ingvard Wilhelmsen (1992). Ny behandling av magesår. (external link)
• Birgitte Boye; Turid Birgitte Boye; Knut Lundin et al. (2008). The INSPIRE study: Do personality traits predict general quality of life (Short form-36) in distressed patients with ulcerative colitis and Crohn's disease?. (external link)
• Ingvard Wilhelmsen; Tone Tangen Haug; Holger Ursin et al. (1994). Effect of short-term cognitive psychoterapy on recurrence of duodenal ulcer: A Prospective randomized trial. (external link)
• Ingvard Wilhelmsen (2005). Biological sensitisation and psychological amplification: Gateways to subjective health complaints and somatoform disorders. (external link)
• Solbjørg Makalani Myrtveit; Ingvard Wilhelmsen; Keith James Petrie et al. (2013). What characterizes individuals developing chronic whiplash?: The Nord-Trondelag Health Study (HUNT). (external link)
• A. Berstad; K. Berstad; Jan Gunnar Hatlebakk et al. (1994). Ti dagers trippelkur for Helicobacter pylori-infeksjon og magesår: Status fire uker og ett år etter. (external link)
• Ingvard Wilhelmsen; A. Berstad (1994). Quality of life and relapse of duodenal ulcer before and after eradication of Helicobacter pylori. (external link)
• A. Berstad; K. Berstad; Jan Gunnar Hatlebakk et al. (1994). Ti dagers trippelkur for Helicobacter pylori-infeksjon og magesår: Status fire uker og ett år etter. (external link)
• Birgitte Boye; Turid Birgitte Boye; Jørgen Jahnsen et al. (2008). The INSPIRE study: Are different personality traits related to disease-specific quality of life (OBDQ) in distressed patients with ulcerative colitis and Crohn's disease?. (external link)
• Ingvard Wilhelmsen; Arnold Berstad (2004). Reduced Relapse Rate in Duodenal Ulcer Disease Leads to Normalization of Psychological Distress: Twelve-year Follow-up. (external link)
• Per Olav Vandvik; Ingvard Wilhelmsen; Camilla Ihlebæk et al. (2004). Comorbidity of irritable bowel syndrome in general practice: a striking feature with clinical implications. (external link)
• K. Berstad; Ingvard Wilhelmsen; A. Berstad (1992). Biometric Evaluation of Gastric Urease Activity in Man. (external link)
• Marianne Klokk; Stephen A. Stansfeld; Simon Nygaard Øverland et al. (2011). Somatization: the under-recognized factor in non-specific eczema. The Hordaland Health Study (HUSK). (external link)
• Ingvard Wilhelmsen; G Jantschek (2007). Psychotherapie bei Hypochondrie - Sinnsuche in der kognitiven Verhaltenstherapie. (external link)
• T.T. Haug; S. Svebak; Ingvard Wilhelmsen et al. (1994). Psychological factors and somatic symptoms in functional dyspepsia: A comparison with duodenal ulcer and healthy controls. (external link)
• Ingvard Wilhelmsen (1996). Quality of Life and Helicobacter pylori Eradication. (external link)
• Ingvard Wilhelmsen; T.T. Haug; Holger Ursin et al. (1995). Discriminant analysis of factors distinguishing patients with functional dyspepsia from patients with duodenal ulcer: Significance of somatization. (external link)
• T.T Haug; Ingvard Wilhelmsen; Holger Ursin et al. (1995). Life-events and stress in patients with functional dyspepsia compared with duodenal ulcer and healthy controls. (external link)
• T.T Haug; S. Svebak; Trygve Hausken et al. (1994). Comments to "Inferring vagal tone from heart rate variability" (editorial comment: Jennings, J.R., McKnight, J.D. Psychosom. Med. 1994; 56: 187-93). (external link)
• R. Berstad; Ingvard Wilhelmsen; A. Berstad (1992). Biometric evaluation of gastric urease activity in man. (external link)
• Arnold Berstad; Trygve Hausken; Odd Helge Gilja et al. (1997). Gastric accommodation in functional dyspepsia. [Review]. (external link)
• Kjersti Balle Tharaldsen; Lars Edvin Bru; Ingvard Wilhelmsen (2011). Mindful coping and metal health among adolescents. (external link)
• Ingvard Wilhelmsen (1995). Magesår (Sammendrag av doktordisputas). (external link)
• Ingvard Wilhelmsen (1995). Duodenal ulcer: Psychological and bacteriological factors. Doctoral dissertation. Self report. (external link)
• Ingvard Wilhelmsen (1995). Quality of life in upper gastrointestinal disorders. (external link)
• Ingvard Wilhelmsen; Ø. Hundal; R. Berstad et al. (1992). Behandling av magesår med vismutbinitrat, oxytetracyclin og metronidaol. (external link)
• Ingvard Wilhelmsen; A. Berstad (1992). Duodenial ulcer recurrence after cognitive therapy and after Helicobacter pylori eradication. (external link)
• Solbjørg Makalani Myrtveit; Jens Christoffer Skogen; Keith James Petrie et al. (2013). Factors related to non-recovery from whiplash. The Nord-Trøndelag Health Study (HUNT). (external link)
• Ingvard Wilhelmsen (2000). The role of psychosocial factors in gastrointestinal disorders. (external link)
• Arnold Berstad; Ketil Berstad; Ingvard Wilhelmsen et al. (1995). Spiramycin in triple therapy of Helicobacter pylori-associated peptic ulcer disease. An open pilot study with 12-month follow-up. (external link)
• Kari-Elise Veddegjærde; Børge Sivertsen; Ingvard Wilhelmsen et al. (2014). Confirmatory factor analysis and item response theory analysis of the Whiteley Index. Results from a large population based study in Norway. The Hordaland Health Study (HUSK). (external link)
• Ingvard Wilhelmsen; Tone Tangen Haug; Holger Ursin et al. (1994). Effect of short-term cognitive psychoterapy on recurrence of duodenal ulcer: A Prospective randomized trial. (external link)
• T.T. Haug; S. Svebak; Ingvard Wilhelmsen et al. (1994). Psychological factors and somatic symptoms in functional dyspepsia: A comparison with duodenal ulcer and healthy controls. (external link)
• Ingvard Wilhelmsen; Ragnar Weberg; Ketil Berstad et al. (1994). Helicobacter pylori eradication with bismuth substrate, oxytetracycline and metronidagol in patients with peptic ulcer disease. (external link)
• Ingvard Wilhelmsen (1994). Psykiatriforskningen som ble til bakteriologi. Intervju med Mette Bugge. (external link)
• Ingvard Wilhelmsen; Ragnar Weberg; Ketil Berstad et al. (1994). Helicobacter pylori eradication with bismuth substrate, oxytetracycline and metronidagol in patients with peptic ulcer disease. (external link)
• Tone Tangen Haug; S. Svebak; Ingvard Wilhelmsen et al. (1994). Psychotherapy in functional dyspepsia. (external link)
• P. M. Isaksen; K. J. Bovim; Tone Tangen Haug et al. (1994). En båtulykke og organiseringen av det psykososiale støtteapparat. (external link)
• Ingvard Wilhelmsen; Tone Tangen Haug; Holger Ursin et al. (1994). Effect of short-term cognitive psychoterapy on recurrence of duodenal ulcer: A Prospective randomized trial. (external link)
• Tone Tangen Haug; S. Svebak; Trygve Hausken et al. (1992). Personality factors as predictors of stress-related antral motility, vagal activation and symptoms in fuctinal dyspepsia patients (abstract). (external link)
• Ann Kristin Knudsen; Line Iden Berge; Jens Christoffer Skogen et al. (2015). The prospective association between health anxiety and cancer detection: A cohort study linking the Hordaland Health Study (HUSK) with the Norwegian Cancer Registry. (external link)
• T.T. Haug; Ingvard Wilhelmsen; S. Svebak et al. (1994). Psychotherapy in functional dyspepsia. (external link)
• TT Haug; Ingvard Wilhelmsen; Arnold Berstad et al. (1995). Life-events and stress in patients with functional dyspepsia compared to patients with duodenal ulcer and healthy controls. (external link)
• Mette Helvik Morken; Ragna Lind; Jørgen Valeur et al. (2009). Subjective health complaints and quality of life in patients with irritable bowel syndrome following Giardia lamblia infection: A case control study. (external link)
• T.T Haug; S. Svebak; Trygve Hausken et al. (1994). Low vagal activity as mediating mechanisms for the relationship between personality factors and gastric symptoms in functional dyspepsia. (external link)
• Ingvard Wilhelmsen; Jørn Bødtker (1996). Kognitiv terapi ved subjektive somatiske symptomer. (external link)

Academic book chapter

• Ingvard Wilhelmsen (1999). Metoder for måling av livskvalitet. (external link)
• Ingvard Wilhelmsen (2007). Hypokondri. (external link)
• Ingvard Wilhelmsen (1995). Magesår. (external link)
• Ingvard Wilhelmsen (2012). Hypochondriasis or health anxiety. (external link)

Journal review

• Ingvard Wilhelmsen (2012). Nøktern om sjalusi. Bokanmeldelse av "Sjalusi. Kjærlighetens skyggesider" av Arne Repål. (external link)
• Ingvard Wilhelmsen (2007). Utfyllende om psykosomatisk medisin. (external link)
• Ingvard Wilhelmsen (2009). Kort og godt om sosial angst. (external link)
• Jørgen Valeur; Trygve Hausken; Jan Gunnar Hatlebakk et al. (2021). Minneord: Arnold Berstad (1940-2020). (external link)
• Ingvard Wilhelmsen (2002). Omfattende om hypokondri. Starcevic V, Lipcitt DR: Hypochondriasis. Modern perspectives on an ancient malady. Oxford 2001. (external link)
• Ingvard Wilhelmsen (2011). "Viktig om metakognitiv terapi". Bokanmeldelse av "Metakognitiv terapi. En innføring" av P. Fisher og A. Wells. (external link)
• Ingvard Wilhelmsen (2006). Fatigue as a window to the brain. (external link)
• Ingvard Wilhelmsen (2011). "Plastikkirurger, hudleger og psykiatere: Les dette!" Bokanmeldelse av "Body dysmorphic disorder. A treatment manual" av D. Veale og F. Neziroglu. (external link)

Conference lecture

• Ingvard Wilhelmsen; Arnold Berstad (1995). Quality of life, dyspeptic symptoms and relapse of duodenal ulcer before and after eradication of Helicobacter pylori. (external link)
• Ingvard Wilhelmsen (1997). Treatment of hypochondria with cognitive behavior therapy. (external link)
• Ingvard Wilhelmsen (2000). Functional dyspepsia: Psychological factors. (external link)
• Ingvard Wilhelmsen; Jan Gunnar Hatlebakk; Snorri Olafsson et al. (1998). On demand therapy of reflux oesophagitis: a study of symptoms, patient satisfaction and quality of life. (external link)
• Ingvard Wilhelmsen (1996). Funksjonelle gastrointestinale tilstander: En oversikt. (external link)
• Odd Helge Gilja; Ingvard Wilhelmsen; Svein Ødegaard (1997). Presentation of a novel ultrasonographic method on the world wide web. (external link)
• Ingvard Wilhelmsen; Tone Tangen-Haug; Arnold Berstad et al. (1996). Effect of short-term cognitive-behaviourial therapy on subjective somatic symptoms in functional dyspepsia: A randomized controlled trial. (external link)
• Ingvard Wilhelmsen (2000). Functional dyspepsia: Psychological factors. (external link)
• Odd Helge Gilja; Ingvard Wilhelmsen; Svein Ødegaard (1997). Gastric motility on the world wide web. (external link)
• Ingvard Wilhelmsen (1992). Problemer tilknyttet behandling av Helicobacter pylori. Bivirkninger/compliance. Referat fra symposium under Nordiske Gastroenterologimøte i Bergen 5/6-92: Magesårsbehandlingen ved et veiskille?. (external link)
• Odd Helge Gilja; Ingvard Wilhelmsen; Svein Ødegaard (1997). Presentation on Internet of a method to study gastric accommodation. (external link)
• A. Berstad; R. Weberg; Ingvard Wilhelmsen et al. (1994). Follow-up on 227 Patients with Peptic Ulcer Disease One Year after Eradication of Helicobacter Pylori. (external link)

Popular science article

• Odd Helge Gilja; Ingvard Wilhelmsen (1997). World wide web som medium til å presentere ny vitenskapelig metode. (external link)
• Ingvard Wilhelmsen; Odd Helge Gilja (1997). Forskningsformidling via world wide web. (external link)
• Ingvard Wilhelmsen (2009). Det tenkte er ofte det verste. (external link)

Research report

• Ingvard Wilhelmsen; Jan Helge Solhaug; Jon Florholmen et al. (1998). "Introduksjon av ny teknologi og nye metoder" i "Etiske utfordringer /dilemma innen gastroenterologien". (external link)

Popular science book

• Ingvard Wilhelmsen (2011). "Det er ikke mer synd på deg enn andre. En bok om ansvar og frigjøring". (external link)
• Ingvard Wilhelmsen (2006). Kongen anbefaler - holdninger for folket. (external link)
• Ingvard Wilhelmsen (2013). "I Don't Eat Blacks! Herdsboy and Educator. The Life of Richard O. Ondeng". (external link)
• Ingvard Wilhelmsen (2008). Kapittel om "Hypokondri" i "Håndbok i kognitiv terapi" Torkil Berge/Arne Repå (red.). (external link)
• Ingvard Wilhelmsen (2004). Sjef i eget liv - en bok om kognitiv terapi. (external link)

Media feature article

• Ingvard Wilhelmsen (1996). "Infections in the gastrointestinal tract." (Bokanmeldelse.). (external link)

Non-fiction book chapter

• Ingvard Wilhelmsen (2015). Sjef i eget liv. (external link)

Conference abstract

• B. Boye; KEA Lundin; S Leganger et al. (2007). Personality traits in inflammatory bowel disease. A cross-sectional study of distressed patients with ulcerative colitis and Crohn's disease. The INSPIRE study. (external link)
• Knut Erik Aslaksen Lundin; Jørgen Jahnsen; Siv Leganger et al. (2008). The INSPIRE study: Does stress management intervention improve course of IBD and disease specific quality of life in distressed patients with Ulcerative colitis and Crohn's disease?. (external link)
• B. Boye; J. Jahnsen; S Leganger et al. (2007). Different personality factors are related to disease specific quality of life (IBDQ) in distressed patients with ulcerative colitis and Crohn's disease. The INSPIRE study. (external link)

Non-fiction monograph

• Ingvard Wilhelmsen; Agneta Hörnsten Svanberg; Ewa Westmann (1996). Hypokondri i gr@ænslandet medicin/psykiatri. (external link)
• Ingvard Wilhelmsen (2000). Livet er et usikkert prosjekt. (external link)
• Ingvard Wilhelmsen (1997). Hypokondri og kognitiv terapi. (external link)
• Ingvard Wilhelmsen (2000). Livet er et usikkert prosjekt. (external link)

Professional article

• Ingvard Wilhelmsen (2024). Hypokondri, fra magen til hodet. (external link)

Academic literature review

• Ingvard Wilhelmsen (2007). Livet er som en fotballkamp. (external link)

Lecture

• Ingvard Wilhelmsen; Kjersti Balle Tharaldsen (2009). Livet er et usikkert prosjekt. Hvordan kan vi best mulig mestre alt stresset, omstillingene og usikkerheten?. (external link)

Doctoral thesis (PhD)

• Ingvard Wilhelmsen (1995). Duodenal ulcer : psychological and bacteriological factors. (external link)

See a complete overview of publications in Cristin.