1. Gastrounit, Division of Medicine, Copenhagen University Hospital Hvidovre, Hvidovre, Copenhagen, Denmark
2. Copenhagen Center for Inflammatory Bowel Disease in Children, Adolescents and Adults, University of Copenhagen, Hvidovre Hospital, Denmark
3. Division of Gastroenterology and Hepatology, University of Calgary, Calgary, AB, Canada
4. Inflammatory Bowel Disease Outpatient Unit, Department of Geriatric Medicine, University Teaching Hospital Lueneburg, Lueneburg, Germany
5. Inflammatory Bowel Disease Unit, Division of Gastroenterology and Hepatology, University of Calgary, Calgary, AB, Canada
6. Department of Gastroenterology, University Teaching Hospital Lueneburg, Bögelstraße 1, Lueneburg 21339, Germany