1. Department of Gastroenterology and Hepatology, Copenhagen University Hospital - Herlev and Gentofte , Herlev , Denmark
2. Gastrounit, Medical Section, Copenhagen University Hospital - Amager and Hvidovre , Hvidovre , Denmark
3. Copenhagen Center for Inflammatory Bowel Disease in Children, Adolescents, and Adults, Hvidovre Hospital , Hvidovre , Denmark
4. Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen , Copenhagen , Denmark