1. Department of Gastroenterology, Hospital Beatriz Ângelo, Loures, Portugal
2. Department of Biomedical Sciences, Humanitas University, Milan, Italy
3. IBD Center, Humanitas Clinical and Research Center, Milan, Italy
4. Centre for Colorectal Disease, St Vincent’s University Hospital and University College Dublin, Dublin, Ireland
5. Department of Internal Medicine and Gastroenterology, Hospital Lüneburg, Lüneburg, Germany
6. Gastroenterology Unit, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa [IIS-IP], Universidad Autónoma de Madrid, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas [CIBEREHD], Madrid, Spain
7. Department of Gastroenterology, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
8. Department of Surgery, Cantonal Hospital Winterthur, Winterthur, Switzerland
9. University of Basel, Basel, Switzerland
10. IBD Unit, Presidio Columbus Fondazione Policlinico Gemelli Universita Cattolica, Rome, Italy
11. Department of Internal Medicine I, Siloah St. Trudpert Hospital, Pforzheim, Germany
12. Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
13. Department of Systems Medicine, University ‘Tor Vergata’ of Rome, Rome, Italy
14. Gastroenterology Practice Minden, Minden, Germany
15. Imelda GI Clinical Research Centre, Imelda General Hospital, Bonheiden, Belgium
16. Gastrounit, Medical Division, Hvidovre Hospital, University of Copenhagen, Hvidovre, Denmark
17. Department of Gastroenterology, Royal Liverpool University Hospital, Liverpool, UK
18. Department of Surgery, Aalborg University Hospital, Aalborg, Denmark
19. Department of Medicine, Division of Gastroenterology, Mater Dei Hospital, Msida, Malta
20. Departement of Surgery, Hospital Zollikerberg, Zollikerberg Zurich, Switzerland
21. Visceral Surgery, Cantonal Hospital Winterthur, Winterthur, Switzerland
22. Department of Human Medicine, University of Witten/Herdecke, Witten, Germany
23. IBD Unit, DIMEC, University of Bologna, Bologna, Italy
24. IBD UNIT, Hospital Clíico Universitario ‘Lozano Blesa’; IIS Aragón, CIBEREHD, Zaragoza, Spain
25. Department of Gastroenterology, Barts Health NHS Trust, Royal London Hospital, London, UK
26. Fifth Department of Internal Medicine, Comenius University Medical School, Bratislava, Slovakia
27. Division of Gastroenterology & Hepatology, Inselspital Bern, Bern, Switzerland
28. Department of Gastroenterology and Hepatology, University and Medical School of Ioannina, Ioannina, Greece
29. Department of Gastroenterology, Tel-HaShomer Sheba Medical Center, Ramat Gan, Israel; and Sackler Medical School, Tel Aviv, Israel
30. Department of Gastroenterology, Hepatology and Nutrition, Pauls Stradins Clinical University Hospital, Department of Internal medicine, Riga Stradiņš university, Riga, Latvia
31. National Public Health Organization, Athens, Greece
32. Outpatients Department of Gastroenterology, Hospital Lüneburg, Lüneburg, Germany
33. Department of Pharmacology and Therapeutics; Institute for Molecular and Cell Biology, University of Porto, Porto, Portugal
34. Department of Medicine [Division of Gastroenterology] and Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada
35. Department of Surgery, and Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
36. Department of Advanced Medical and Surgical Sciences, Universitá degli Studi della Campania ‘Luigi Vanvitelli’, Naples, Italy
37. Department of Gastroenterology, IPOLFG, Lisbon, Portugal
38. Department of Gastroenterology and Hepatology, University Hospitals, KU Leuven, Leuven, Belgium
39. Department of Surgery, Oncology and Gastroenterology, University of Padova, Padova, Italy
40. Humanitas Clinical and Research Center, Division of Colon and Rectal Surgery, Humanitas University, Milan, Italy
41. Department of General Surgery, Maastricht University Medical Centre, Maastricht, The Netherlands
42. Department of Gastroenterology, IBD unit, Beaujon Hospital, APHP, Clichy, France
43. Division of Gastroenterology and Hepatology, University Hospital, Zürich, Switzerland
44. Department of Gastroenterology and Hepatology, University Hospitals Leuven, KU Leuven, Leuven, Belgium
45. Department of Chronic Diseases, Metabolism and Ageing, TARGID-IBD, KU Leuven, Leuven, Belgium
46. Imperial College London, Department of Surgery and Cancer, St Mark’s Hospital, Department of Gastroenterology, London, UK
47. Department of Surgery, Shamir Medical Center [Assaf Harofe], Tel Aviv, Israel