2024

• Farup, Per Grønaas. (2024) Changes in bone turnover markers 6–12 months after bariatric surgery. Scientific Reports
  Academic article

2023

• Farup, Per Grønaas; Rootwelt, Helge; Hestad, Knut. (2023) APOE Polymorphism Is Associated with Changes in the Kynurenine Pathway. Genes
  Academic article
• Farup, Per Grønaas; Hamarsland, Håvard; Mølmen, Knut Sindre; Ellefsen, Stian; Hestad, Knut. (2023) The Kynurenine Pathway in Healthy Subjects and Subjects with Obesity, Depression and Chronic Obstructive Pulmonary Disease. Pharmaceuticals
  Academic article

2022

• Farup, Per Grønaas; Jansen, Aina; Hestad, Knut; Aaseth, Jan; Rootwelt, Helge. (2022) APOE Polymorphism and Endocrine Functions in Subjects with Morbid Obesity Undergoing Bariatric Surgery. Genes
  Academic article
• Farup, Per Grønaas; Hestad, Knut. (2022) The Peripheral Kynurenine Pathway and Psychosomatic Comorbidity in Subjects with Morbid Obesity Undergoing Bariatric Surgery. Applied Sciences
  Academic article
• Aaseth, Jan Olav; Rootwelt, Helge; Retterstøl, Kjetil; Hestad, Knut; Farup, Per Grønaas. (2022) Reply to Paredes et al. Comment on "Aaseth et al. Circulating Lipoproteins in Subjects with Morbid Obesity Undergoing Bariatric Surgery with Gastric Bypass or Sleeve Gastrectomy. Nutrients 2022, 14, 2381". Nutrients
  Reader opinion piece
• Jansen, Aina; Aaseth, Jan Olav; Lyche, Jan Ludvig; Berg, Jens Petter; Müller, Mette Helen Bjørge; Lydersen, Stian. (2022) Do changes in persistent organic pollutants after bariatric surgery cause endocrine disruption?. Chemosphere
  Academic article
• Aaseth, Jan; Rootwelt, Helge; Retterstøl, Kjetil; Hestad, Knut; Farup, Per Grønaas. (2022) Reply to Paredes et al. Comment on “Aaseth et al. Circulating Lipoproteins in Subjects with Morbid Obesity Undergoing Bariatric Surgery with Gastric Bypass or Sleeve Gastrectomy. Nutrients 2022, 14, 2381”. Nutrients
  Letter to the editor
• Opstad, Trine Baur; Farup, Per Grønaas; Rootwelt, Helge; Aaseth, Jan. (2022) Changes in circulating sirtuin 1 after bariatric surgery. NMCD. Nutrition Metabolism and Cardiovascular Diseases
  Academic article
• Aaseth, Jan; Rootwelt, Helge; Retterstøl, Kjetil; Hestad, Knut; Farup, Per Grønaas. (2022) Circulating Lipoproteins in Subjects with Morbid Obesity Undergoing Bariatric Surgery with Gastric Bypass or Sleeve Gastrectomy. Nutrients
  Academic article

2021

• Farup, Per Grønaas; Maseng, Maria G.. (2021) Are faecal microbiota analyses on species-level suitable clinical biomarkers? A pilot study in subjects with morbid obesity. Microorganisms
  Academic article

2020

• Farup, Per Grønaas; Valeur, Jørgen. (2020) Changes in Faecal Short-Chain Fatty Acids after Weight-Loss Interventions in Subjects with Morbid Obesity. Nutrients
  Academic article
• Farup, Per Grønaas; Rootwelt, Helge; Hestad, Knut. (2020) APOE – a genetic marker of comorbidity in subjects with morbid obesity. BMC Medical Genetics
  Academic article
• Farup, Per Grønaas. (2020) Are the Results of a Combined Behavioural and Surgical Treatment of Morbid Obesity Satisfactory and Predictable?. Nutrients
  Academic article
• Aasbrenn, Martin; Lydersen, Stian; Farup, Per Grønaas. (2020) Changes in serum zonulin in individuals with morbid obesity after weight-loss interventions: a prospective cohort study. BMC Endocrine Disorders
  Academic article

2019

• Røyset, Bodil; Talseth-Palmer, Bente Anita; Lydersen, Stian; Farup, Per Grønaas. (2019) Effects of a fall prevention program in elderly: A pragmatic observational study in two orthopedic departments. Clinical Interventions in Aging
  Academic article
• Høgestøl, Ingvild Kristine; Aasbrenn, Martin; Chahal-Kummen, Monica; Brunborg, Cathrine; Eribe, Inger; Kristinsson, Jon Adalsteinn. (2019) Irritable bowel syndrome-like symptoms and health related quality of life two years after Roux-en-Y gastric bypass - a prospective cohort study. BMC Gastroenterology
  Academic article
• Aasbrenn, Martin; Farup, Per Grønaas; Videm, Vibeke. (2019) Changes in C-reactive protein, neopterin and lactoferrin differ after conservative and surgical weight loss in individuals with morbid obesity. Scientific Reports
  Academic article
• Farup, Per Grønaas; Lydersen, Stian; Valeur, Jørgen. (2019) Are Nonnutritive Sweeteners Obesogenic? Associations between Diet, Faecal Microbiota, and Short-Chain Fatty Acids in Morbidly Obese Subjects. Journal of Obesity
  Academic article

2018

• Farup, Per Grønaas; Aasbrenn, Martin; Valeur, Jørgen. (2018) Separating “good” from “bad” faecal dysbiosis – evidence from two cross-sectional studies. BMC Obesity
  Academic article
• Kvehaugen, Anne Stine; Farup, Per Grønaas. (2018) Changes in gastrointestinal symptoms and food tolerance 6 months following weight loss surgery: associations with dietary changes, weight loss and the surgical procedure. BMC Obesity
  Academic article
• Aasbrenn, Martin; Farup, Per Grønaas; Lydersen, Stian. (2018) Irritable bowel syndrome in subjects with morbid obesity. Observational studies of patients at outpatient clinics. NTNU - Trondheim
  Doctoral dissertation
• Farup, Per Grønaas; Valeur, Jørgen. (2018) Faecal microbial markers and psychobiological disorders in subjects with morbid obesity. A cross-sectional study. Behavioral Sciences
  Academic article
• Vifladt, Anne; Farup, Per Grønaas; Lydersen, Stian. (2018) Patient safety culture in a Norwegian hospital trust. The associations with structural changes and organisational and individual factors. NTNU
  Doctoral dissertation
• Kvehaugen, Anne Stine; Tveiten, Dag; Farup, Per Grønaas. (2018) Is perceived intolerance to milk and wheat associated with the corresponding IgG and IgA food antibodies? A cross sectional study in subjects with morbid obesity and gastrointestinal symptoms. BMC Gastroenterology
  Academic article
• Aasbrenn, Martin; Lydersen, Stian; Farup, Per Grønaas. (2018) A conservative weight loss intervention relieves bowel symptoms in morbidly obese subjects with irritable bowel syndrome: a prospective cohort study. Journal of Obesity
  Academic article
• Aasbrenn, Martin; Valeur, Jørgen; Farup, Per Grønaas. (2018) Evaluation of a faecal dysbiosis test for irritable bowel syndrome in subjects with and without obesity. Scandinavian Journal of Clinical and Laboratory Investigation
  Academic article

2017

• Farup, Per Grønaas; Ueland, Thor; Rudi, Knut; Lydersen, Stian; Hestad, Knut. (2017) Functional Bowel Disorders Are Associated with a Central Immune Activation. Gastroenterology Research and Practice
  Academic article
• Aasbrenn, Martin; Høgestøl, Ingvild Kristine; Eribe, Inger; Kristinsson, Jon Adalsteinn; Lydersen, Stian; Mala, Tom. (2017) Prevalence and predictors of irritable bowel syndrome in patients with morbid obesity: a cross-sectional study. BMC Obesity
  Academic article
• Kvehaugen, Anne Stine; Aasbrenn, Martin; Farup, Per Grønaas. (2017) Anti-Saccharomyces cerevisiae antibodies (ASCA) are associated with body fat mass and systemic inflammation, but not with dietary yeast consumption: a cross-sectional study. BMC Obesity
  Academic article
• Winther, Robert; Aasbrenn, Martin; Farup, Per Grønaas. (2017) Intake of non-nutritive sweeteners is associated with an unhealthy lifestyle: a cross-sectional study in subjects with morbid obesity. BMC Obesity
  Academic article
• Hestad, Knut; Engedal, Knut; Whist, Jon Elling; Farup, Per Grønaas. (2017) The Relationships among Tryptophan, Kynurenine, Indoleamine 2,3-Dioxygenase, Depression, and Neuropsychological Performance. Frontiers in Psychology
  Academic article

2016

• Hestad, Knut; Engedal, Knut; Whist, Jon Elling; Aukrust, Pål; Farup, Per Grønaas; Mollnes, Tom Eirik. (2016) Patients with depression display cytokine levels in serum and cerebrospinal fluid similar to patients with diffuse neurological symptoms without a defined diagnosis. Neuropsychiatric Disease and Treatment
  Academic article
• Farup, Per Grønaas; Rudi, Knut; Hestad, Knut. (2016) Faecal short-chain fatty acids - a diagnostic biomarker for irritable bowel syndrome?. BMC Gastroenterology
  Academic article
• Vifladt, Anne; Simonsen, Bjørg Øfstedal; Lydersen, Stian; Farup, Per Grønaas. (2016) The association between patient safety culture and burnout and sense of coherence: A cross-sectional study in restructured and not restructured intensive care units. Intensive & Critical Care Nursing
  Academic article
• Farup, Per Grønaas. (2016) Diagnostikk av irritabel tarmsyndrom – finnes det gode biomarkører?. Bioingeniøren
  Academic literature review
• Vifladt, Anne; Simonsen, Bjørg Øfstedal; Lydersen, Stian; Farup, Per Grønaas. (2016) Changes in patient safety culture after restructuring of intensive care units: Two cross-sectional studies. Intensive & Critical Care Nursing
  Academic article
• Hestad, Knut; Engedal, Knut; Whist, Jon Elling; Farup, Per Grønaas. (2016) The effect of ApoE e4 on blood pressure in patients with and without depression. Neuropsychiatric Disease and Treatment
  Academic article

2015

• Farup, Per Grønaas; Hestad, Knut. (2015) Cognitive Functions and Depression in Patients with Irritable Bowel Syndrome. Gastroenterology Research and Practice
  Academic article
• Vifladt, Anne; Simonsen, Bjørg Øfstedal; Lydersen, Stian; Farup, Per Grønaas. (2015) The Culture of Incident Reporting and Feedback: A Cross-Sectional Study in a Hospital Setting. Open Journal of Nursing
  Academic article
• Farup, Per Grønaas. (2015) Are measurements of patient safety culture and adverse events valid and reliable? Results from a cross sectional study. BMC Health Services Research
  Academic article
• Michaelsen, Vilde Lehne; Vandvik, Per Olav; Farup, Per Grønaas. (2015) Predictors of health-related quality of life in patients with irritable bowel syndrome. A cross-sectional study in Norway. Health and Quality of Life Outcomes
  Academic article
• Sauar, Jostein; Valeur, Jørgen; Berstad, Arnold; Lundin, Knut E A; Engstrand, Lars; Farup, Per Grønaas. (2015) Det første nasjonale møtet om funksjonelle mage-tarm-lidelser (FGID) 18. mars 2015. NGF-nytt
  Abstract

2014

• Farup, Per Grønaas. (2014) Forstoppelsesdominert irritabel tarm syndrom – hva er nytt for en kliniker?. BestPractice Gastroenterologi
  Academic literature review
• Simonsen, Bjørg Øfstedal; Dæhlin, Gro Kvanli; Johansson, Inger Signe; Farup, Per Grønaas. (2014) Improvement of drug dose calculations by classroom teaching or e-learning: a randomised controlled trial in nurses. BMJ Open
  Academic article
• Simonsen, Bjørg Øfstedal; Dæhlin, Gro Kvanli; Johansson, Inger Signe; Farup, Per Grønaas. (2014) Differences in medication knowledge and risk of errors between graduating nursing students and working registered nurses: comparative study. BMC Health Services Research
  Academic article

2013

• Kjeldby, Ida Kindsbekken; Fosnes, Gunvor Steine; Ligaarden, Solveig Catharina; Farup, Per Grønaas. (2013) Vitamin B6 deficiency and diseases in elderly people - a study in nursing homes. BMC Geriatrics
  Academic article
• Farup, Per Grønaas. (2013) Dypdykk i randomiserte kliniske forsøk. Tidsskrift for Den norske legeforening
  Book review
• Panton, Kristine Kollerøs; Farup, Per Grønaas; Sagen, Erling; Sirum, Unni; Åsberg, Arne. (2013) Vitamin B6 in plasma - sample stability and the reference limits. Scandinavian Journal of Clinical and Laboratory Investigation
  Academic article

2012

• Fosnes, Gunvor Steine; Lydersen, Stian; Farup, Per Grønaas. (2012) Drugs and Constipation in Elderly in Nursing Homes: What Is the Relation?. Gastroenterology Research and Practice
  Academic article
• Ligaarden, Solveig Catharina; Lydersen, Stian; Farup, Per Grønaas. (2012) Diet in subjects with irritable bowel syndrome: A cross-sectional study in the general population. BMC Gastroenterology
  Academic article
• Farup, Per Grønaas; Jacobsen, Morten; Ligaarden, Solveig Catharina; Rudi, Knut. (2012) Probiotics, Symptoms, and Gut Microbiota: What Are the Relations? A Randomized Controlled Trial in Subjects with Irritable Bowel Syndrome. Gastroenterology Research and Practice
  Academic article
• Farup, Per Grønaas; Sperber, Ami D; Simrèn, Magnus. (2012) Irritable Bowel Syndrome. Gastroenterology Research and Practice
  Editorial
• Ligaarden, Solveig Catharina; Lydersen, Stian; Farup, Per Grønaas. (2012) IgG and IgG4 antibodies in subjects with irritable bowel syndrome: a case control study in the general population. BMC Gastroenterology
  Academic article

2011

• Simonsen, Bjørg O; Dæhlin, Gro K; Johansson, Inger; Farup, Per Grønaas. (2011) Improving drug dose calculation skills among nurses: does choice of didactic method matter? a randomized controlled trial. Pharmacy World & Science (PWS)
  Abstract
• Farup, Per Grønaas; Blix, Ivar; Førre, Sigurd; Johnsen, Gjermund; Lange, Ove Juel; Johannessen, Rune. (2011) What causes treatment failure - the patient, primary care, secondary care or inadequate interaction in the health services?. BMC Health Services Research
  Academic article
• Fosnes, Gunvor Steine; Lydersen, Stian; Farup, Per Grønaas. (2011) Effectiveness of laxatives in elderly - a cross sectional study in nursing homes. BMC Geriatrics
  Academic article
• Fosnes, Gunvor Steine; Lydersen, Stian; Farup, Per Grønaas. (2011) Constipation and diarrhoea - common adverse drug reactions? A cross sectional study in the general population. BMC Clinical Pharmacology
  Academic article
• Farup, Per Grønaas. (2011) Questions about mesalazine and the irritable bowel syndrome. Alimentary Pharmacology and Therapeutics
  Reader opinion piece
• Ligaarden, Solveig Catharina; Farup, Per Grønaas. (2011) Low intake of vitamin B-6 is associated with irritable bowel syndrome symptoms. Nutrition Research
  Academic article
• Simonsen, Bjørg Øfstedal; Johansson, Inger Signe; Dæhlin, Gro Iren Kvanli; Osvik, Lene Merete; Farup, Per Grønaas. (2011) Medication knowledge, certainty, and risk of errors in health care: a cross-sectional study. BMC Health Services Research
  Academic article
• Simonsen, Bjørg Øfstedal; Dæhlin, Gro Iren Kvanli; Johansson, I; Farup, Per Grønaas. (2011) Improving drug dose calculation skills among nurses: does choice of didactic method matter? A randomized controlled trial. International Journal of Clinical Pharmacology Research
  Abstract

2010

• Fosnes, Gunvor Steine; Farup, Per Grønaas. (2010) Are drugs the cause of constipation in nursing homes? A cross sectional study. Gut
  Abstract
• Farup, Per Grønaas; Jacobsen, Morten; Ligarden, Solveig; Rudi, Knut. (2010) Do probiotics exert the effect per se or through changes in the microbiota? A randomized controlled trial in patients with irritable bowel syndrome. Gut
  Abstract
• Ligaarden, Solveig Catharina; Axelsson, Lars; Naterstad, Kristine; Lydersen, Stian; Farup, Per Grønaas. (2010) A candidate probiotic with unfavourable effects in subjects with irritable bowel syndrome: a randomised controlled trial. BMC Gastroenterology
  Academic article
• Johansson, Per A; Farup, Per Grønaas; Bracco, Andrea; Vandvik, Per Olav. (2010) How does comorbidity affect cost of health care in patients with irritable bowel syndrome? A cohort study in general practice. BMC Gastroenterology
  Academic article
• Nordang, Kirsten; Hall-Lord, Marie Louise; Farup, Per Grønaas. (2010) Burnout in health-care professionals during reorganizations and downsizing. A cohort study in nurses. BMC Nursing
  Academic article

2009

• Farup, PG; Blix, I; Forre, S; Johnsen, G; Lange, O; Johannessen, R. (2009) Why do some patients with gastro-esophageal reflux disease have persisting symptoms?. Scandinavian Journal of Gastroenterology
  Abstract
• Farup, Per Grønaas; Heibert, M; Hoeg, V. (2009) Alternative vs. conventional treatment given on-demand for gastroesophageal reflux disease: a randomised controlled trial. BMC Complementary and Alternative Medicine
  Academic article
• Hovde, Øistein; Farup, Per Grønaas. (2009) A comparison of diagnostic tests for lactose malabsorption – which one is the best?. BMC Gastroenterology
  Academic article
• Urnes, Jørgen; Farup, Per Grønaas. (2009) Patient education in gastro-oesophageal reflux disease. Tapir Uttrykk
  Doctoral dissertation

2008

• Ligaarden, Solveig Catharina; Fosnes, Gunvor Steine; Nordling, Ketil; Farup, Per Grønaas. (2008) Food and yeast IgG antibodies in subjects with Irritable Bowel Syndrome - a case-control study. Gut
  Abstract
• Hovde, Øistein; Farup, Per Grønaas. (2008) A comparison between blood sugar measurement and H2/CH4 breath test in the diagnosis of lactose intolerance. Gut
  Abstract
• Urnes, Jørgen; Petersen, Hermod; Farup, Per Grønaas. (2008) Disease knowledge after an educational program in patients with GERD -a randomized controlled trial. BMC Health Services Research
  Academic article
• Urnes, Jørgen; Petersen, Hermod; Farup, Per Grønaas. (2008) Disease knowledge after an educational program in patients with GERD – a randomized controlled trial This article is available from: http://www.biomedcentral.com/1472-6963/8/236. BMC Health Services Research
  Academic article

2007

• Farup, Per Grønaas. (2007) Matvareintoleranse - en diagnostisk nøtt. Tidsskrift for Den norske legeforening
  Editorial
• Fosnes, Gunvor; Farup, Per Grønaas. (2007) Irritable bowel syndrome - a drug-related disorder?. Gut
  Abstract
• Ligaarden, Solveig Chatarina; Naterstad, K; Axelsson, Lars; Farup, Per Grønaas. (2007) Lactobacillus plantarum MF 1298 - a probiotic with unfavourable effects in patients with irritable bowel syndrome? A randomised, double blind, placebo controlled trial. Gut
  Abstract
• Johansson, P.A.; Farup, Per Grønaas; Vandvik, Per Olav. (2007) Irritable bowel syndrome in general practice: cohort study of health resources, costs and comorbidity. Gut
  Abstract
• Fosnes, Gunvor; Farup, Per Grønaas. (2007) Gastrointestinal Side Effects of Drugs - Is It a Problem? A population Based Study. Gastroenterology
  Abstract
• Urnes, Jørgen; Farup, Per Grønaas; Lydersen, Stian; Petersen, Hermod. (2007) Patient education in gastro-oesophageal reflux disease: a randomized controlled trial. European Journal of Gastroenterology and Hepathology
  Academic article

2006

• Urnes, Jørgen; Johannessen, Terje; Farup, Per Grønaas; Lydersen, Stian; Petersen, Hermod. (2006) Digestive symptoms and their psychosocial impact: Validation of a questionnaire. Scandinavian Journal of Gastroenterology
  Academic article
• Vandvik, Per Olav; Lydersen, Stian; Farup, Per Grønaas. (2006) Prevalence, comorbidity and impact of irritable bowel syndrome in Norway. Scandinavian Journal of Gastroenterology
  Academic article
• Farup, Per Grønaas. (2006) Hvordan gjøre opp et klinisk materiale? epidemiologiske metoder i pasientnær forskning. Norsk Epidemiologi
  Academic article
• Monsbakken, Kristina W; Vandvik, Per Olav; Farup, Per Grønaas. (2006) Perceived food intolerance in subjects with irritable bowel syndrome/etiology, prevalence and consequences. European Journal of Clinical Nutrition
  Academic article

2005

• Farup, Per Grønaas; Vandvik, Per Olav. (2005) External validity of clinical research-a widespread problem! (BMJ e-letter) http://bmj.bmjjournals.com/cgi/eletters/331/7524/1036. BMJ. British Medical Journal
  Reader opinion piece
• Vandvik, Per Olav; Farup, Per Grønaas. (2005) Abdominal complaints in general practice: Diagnoses and characteristics of patients. Scandinavian Journal of Primary Health Care
  Reader opinion piece
• Monsbakken, Kristina W; Vandvik, Per Olav; Farup, Per Grønaas. (2005) The value of a general therapeutic approach in subjects with irritable bowel syndrome. Alimentary Pharmacology and Therapeutics
  Academic article
• Farup, Per Grønaas; Aabakken, L; Vandvik, Per Olav. (2005) How useful are the Rome II criteria for identification of upper gastrointestinal disorders in general practice?. Scandinavian Journal of Gastroenterology
  Academic article
• Vandvik, Per Olav; Farup, Per Grønaas. (2005) Is there a gradient of comorbidity related to consultation behavior in irritable bowel syndrome (IBS). Gut
  Academic article
• Farup, Per Grønaas; Edna, Tom-Harald; Hole, Torstein; Midgard, Rune; Lydersen, Stian; Kaasa, Stein. (2005) The cooperation between Helse-Midt-Norge and NTNU supports clinical research. Tidsskrift for Den norske legeforening
  Academic article
• Ligaarden, Solveig Chatarina; Farup, Per Grønaas. (2005) Dietary modifications in subjects with irritable bowel syndrome: cause or consequence. Gut
  Academic article

2004

• Monsbakken, KW; Vandvik, PO; Farup, Per Grønaas. (2004) Any relation between food intolerance and fibromyalgia or mood disorders in persons with irritable bowel syndrome?. Scandinavian Journal of Gastroenterology
  Abstract
• Vandvik, PO; Wilhelmsen, I; Farup, Per Grønaas. (2004) Irritable bowel syndrome (IBS) in general practice: Are coexisting somatic symptoms markers for psychological distress?. Scandinavian Journal of Gastroenterology
  Abstract
• Vandvik, PO; Farup, Per Grønaas. (2004) Irritable Bowel Syndrome in a Norwegian Population: Prevalence and Association with Mood Disorders and Muskuloskeletal Complaints. Gastroenterology
  Abstract
• Hofmann, B; Markestad, T; Juvkam, R; Gerner, T; Aaboen, U; Farup, Per Grønaas. (2004) Lokale forskningsfond i spesialisthelsetjenesten. Tidsskrift for Den norske legeforening
  Reader opinion piece
• Farup, Per Grønaas; Tegaserod, Bytzer P.. (2004) Merely a Laxative?. Scandinavian Journal of Gastroenterology
  Reader opinion piece
• Farup, Per Grønaas; Monsbakken, KW; Vandvik, PO. (2004) Lactose malabsorption and IBS. Scandinavian Journal of Gastroenterology
  Reader opinion piece
• Vandvik, Per Olav; Wilhelmsen, Ingvard; Ihlebæk, Camilla; Farup, P. G.. (2004) Comorbidity of irritable bowel syndrome in general practice: a striking feature with clinical implications. Alimentary Pharmacology and Therapeutics
  Academic article
• Hofmann, Bjørn; Markestad, T; Juvkam, RA; Gerner, T; Aaboen, U; Farup, P.G.. (2004) Lokale forskningsfond i spesialisthelsetjenesten. Tidsskr Nor Lægeforen 2004; 124: 1670. Tidsskrift for Den norske legeforening
  Academic article
• Farup, Per Grønaas; Monsbakken, KW. (2004) Lactose malabsorption in a population with irritable bowel syndrome: Prevalence and symptoms. A case-control study. Scandinavian Journal of Gastroenterology
  Academic article
• Vandvik, PO; Aabakken, L; Farup, Per Grønaas. (2004) Diagnosing irritable bowel syndrome: poor agreement between general practitioners and the Rome II criteria. Scandinavian Journal of Gastroenterology
  Academic article
• Vandvik, PO; Wilhelmsen, I; Ihlebæk, C; Farup, Per Grønaas. (2004) Comorbidity of IBS in general practice: a striking feature with clinical implications. Alimentary Pharmacology and Therapeutics
  Academic article
• Vandvik, PO; Kristensen, P; Aabakken, L; Farup, Per Grønaas. (2004) Abdominal complaints in general practice - Diagnoses and characteristics of patients. Scandinavian Journal of Primary Health Care
  Academic article
• Farup, Per Grønaas. (2004) Øvre gastrointestinal blødning - en tilstand i endring. Tidsskrift for Den norske legeforening
  Academic article
• Vandvik, PO; Aabakken, Lars; Farup, PG. (2004) Diagnosing irritable bowel syndrome: poor agreement between general practitioners and the Rome II criteria. Scandinavian Journal of Gastroenterology
  Academic article
• Hofmann, B; Markestad, T; Juvkam, R; Gerner, T; Aaboen, U; Farup, Per Grønaas. (2004) Gode erfaringer med lokalt FoU-fond. Dagens medisin
  Popular scientific article

2003

• Farup, Per Grønaas. (2003) Medisinsk forskningsterminologi. Tidsskrift for Den norske legeforening
  Feature article
• Farup, Per Grønaas. (2003) Helicobacter pylori-behandling � resultater og erfaringer med samarbeid via Internett. Tidsskrift for Den norske legeforening
  Academic article

2002

• Farup, Per Grønaas. (2002) Functional dyspepsia and gastric acid: any relation?. Scandinavian Journal of Gastroenterology
  Academic article
• Farup, Per Grønaas; Lange, O.J.; Tholfsen, J.; Høeg, V.; Wetterhus, S.. (2002) The Effect of Helicobacter pylori Retreatment with Ranitidine Bismuth Citrate, Clarithromycin, and Metronidazole Depends on the First-Line Therapy. Journal of Clinical Gastroenterology
  Academic article
• Farup, Per Grønaas. (2002) Irritabel tarm - oppspinn eller gravalvor?. Tidsskrift for Den norske legeforening
  Academic article
• Farup, Per Grønaas; Skar, Viggo. (2002) Collaboration by use of Internet yields data of high quality and detects non-uniform management of patients with Helicobacter pylori infection. Scandinavian Journal of Gastroenterology
  Academic article
• Farup, Per Grønaas; Tholfsen, J.; Wetterhus, S.; Torp, Roald; Høie, Ole; Lange, O.J.. (2002) Comparison of three triple regimens with omeprazole or ranitidine bismuth citrate for Helicobacter pylori eradication. Scandinavian Journal of Gastroenterology
  Academic article
• Farup, Per Grønaas; Berstad, Arnold. (2002) Magesår skyldes bakterie - ikke stress. Norges forskningsråd Norges forskningsråd
  Report
• Berstad, Arnold; Farup, Per. (2002) Magesår skyldes en bakterie – ikke stress. Norges forskningsråd
  Academic chapter/article/Conference paper

2001

• Farup, Per Grønaas. (2001) Er manglende markedsføring også uheldig?. Tidsskrift for Den norske legeforening
  Feature article
• Farup, Per Grønaas; Juul-Hansen, P.H.; Rydning, A.. (2001) Does Short-term Treatment With Proton Pump Inhibitors Cause Rebound Aggravation of Symptoms?. Journal of Clinical Gastroenterology
  Academic article
• Farup, Per Grønaas; Hinterleitner, Thomas A.; Lukás, Milan; Hébuterne, Xavier; Rachmilewitz, Daniel; Campieri, Massimo. (2001) Mesalazine 4 g Daily Given as Prolonged-Release Granules Twice Daily and Four Times Daily Is at Least as Effective as Prolonged-Release Tablets Four Times Daily in Patients with Ulcerative Colitis. Inflammatory Bowel Diseases
  Academic article

1998

• Lygren, I.; Andersen, L.P.; Lerang, F.; Kleveland, P.M.; Farup, P.G.; Vatn, Morten H. (1998) Behandling av helicobacter pylori. Tidsskrift for Den norske legeforening
  Academic article

1997

• Farup, P.G.; Wetterhus, S.; Osnes, Magne; Ulshagen, K.. (1997) Randitidine effectively relieves symptoms in a subset of patients with functional dyspepsia. Scandinavian Journal of Gastroenterology
  Academic article