1. Department of Health Management and Health Economy and KG Jebsen Centre for Colorectal Cancer, University of Oslo, Oslo, Norway
2. Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
3. Department of Gastroenterology and Hepatology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
4. Department of Interdisciplinary Endoscopy, University Hospital Hamburg-Eppendorf, Germany
5. Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden
6. Department of Internal Medicine, First Faculty of Medicine, Charles University, Military University Hospital Prague, Czech Republic
7. Unidad de Gastroenterologia, Hospital General Universitario de Alicante, Alicante, Spain
8. Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center, Rotterdam, the Netherlands
9. Gastroenterology Department, University Hospital Leuven, Leuven, Belgium
10. Digestive Endoscopy Unit, Catholic University, Rome, Italy
11. Department of Gastroenterology, Gloucestershire Royal Hospital, Gloucester, UK
12. Department of Internal Medicine, Joseph’s Hospital, Warendorf, Germany
13. Department of Gastroenterology, University Hospital of North Tees, Stockton-on-Tees, Cleveland, UK