1. Department of Internal Medicine, Section of Gastroenterology, Hospital of South West Jutland, Esbjerg, Denmark
2. Department of Regional Health Research, University of Southern Denmark, Denmark
3. Department of Medical Gastroenterology, Odense University Hospital, Odense, Denmark
4. Research Unit of Medical Gastroenterology, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
5. OPEN Odense Patient data Explorative Network, Odense University Hospital, Odense, Denmark
6. Department of Internal Medicine, Section of Gastroenterology, Lillebaelt Hospital, Vejle, Denmark