Affiliation: | 1. Department of Gastroenterology, Division of Medicine, Nordland Hospital, Bod?, Norway;2. Research group of Gastroenterology and Nutrition, Department of Clinical Medicine, UiT The Arctic University of Norway, Troms?, Norway;3. Department of Gastroenterology, University Hospital of North Norway, Troms?, Norway;4. Department of Microbiology, University Hospital of North Norway, Troms?, Norway;5. Department of Community Medicine, UiT The Arctic University of Norway, Troms?, Norway |