1. Department of Gastroenterology, South Tyneside District Hospital, South Shields, United Kingdom
2. Department of Gastroenterology, Hepatology and Oncology, Medical Centre for Postgraduate Education and the Maria Sklodowska-Curie Memorial Cancer Centre and Institute of Oncology, Warsaw, Poland
3. Department of Gastroenterology, University Hospital Leuven, Leuven, Belgium
4. Research Centre of Gastroenterology and Hepatology, University of Medicine and Pharmacy of Craiova, Craiova, Romania
5. Department of Gastroenterology and Hepatology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
6. Institute of Gastroenterology and Liver Diseases, Ha’Emek Medical Centre, Afula, Israel
7. Carol Davila University of Medicine and Pharmacy, Gastroenterology and Hepatology Clinic, Fundeni Clinical Institute, Bucharest, Romania
8. Department of Gastroenterology, Instituto Portugues de Oncologia, Porto, Portugal
9. Department of Gastroenterology, Hospital General Universitario, Alicante, Spain
10. Gastrointestinal Unit, Department of Surgery, University Hospital Herlev, Copenhagen, Denmark
11. Digestive Endoscopy Unit, Catholic University, Rome, Italy
12. Gastroenterology Unit, Nuovo Regina Margherita Hospital, Rome, Italy
13. Department of Gastroenterology, Gloucestershire Royal Hospital, Gloucester, United Kingdom
14. Department of Gastroenterology and Hepatology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
15. Department of Gastroenterology, Hepatopancreatology and Digestive Oncology, Université Libre de Bruxelles, Erasme Hospital, Brussels, Belgium
16. Department of Medicine, Josephs-Hospital Warendorf, Academic Teaching Hospital, University of Münster, Warendorf, Germany
17. Department of Health Management and Health Economics and KG Jebsen Center for Colorectal Cancer Research, University of Oslo, Oslo, Norway
18. Department of Gastroenterology, University Hospital of North Tees, Stockton-on-Tees, Cleveland, United Kingdom
19. Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
20. Department of Digestive Diseases, Hospital Edouard Herriot, Lyon, France
21. Department of Gastroenterology and Hepatology, Radboud University Medical Center, NIjmegen, The Netherlands