1. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
2. IBD Center, Department of Gastroenterology, Humanitas Clinical and Research Center-IRCCS, Rozzano, Milan, Italy
3. Hellenic Centre for Disease Control and Prevention, Athens, Greece
4. Barts Health Royal London Hospital, London, UK
5. Gastroenterology Division, Hospital Beatriz Ângelo, Loures, Portugal
6. Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
7. Gastroenterology Unit, Hospital Universitario de La Princesa, IIS-IP, Universidad Autónoma de Madrid, CIBEREHD, Madrid, Spain
8. Gastrointestinal Unit, Western General Hospital, Edinburgh, UK
9. Imelda GI Clinical Research Centre, Imeldaziekenhuis Bonheiden, Bonheiden, Belgium
10. Gastrounit, Medical Division, Hvidovre University Hospital, Hvidovre, Denmark
11. University Medical Center Groningen, Department of Gastroenterology and Hepatology, Groningen, The Netherlands
12. Erasmus Medical Center, Children’s Hospital Department of Paediatric Gastroenterology, Rotterdam, The Netherlands
13. Department of Medicine I, Agaplesion Markus Hospital, Goethe-University, Frankfurt am Main, Germany
14. European Federation of Crohn’s and Ulcerative Colitis Associations [EFCCA], Brussels, Belgium
15. Department of Cellular Pathology, Royal London Hospital, London, UK
16. Department of Abdominal Surgery, University Medical Centre Ljubljana, Ljubljana, Slovenia
17. IBD Unit, St Mark’s Hospital, Harrow, UK
18. Stockholm Gastro Center, Karolinska Institutet Danderyds sjukhus, Stockholm, Sweden
19. Department of Gastroenterology and Hepatology, University and Medical School of Ioannina, Ioannina, Greece
20. APHP Beaujon, Department of Colorectal Surgery, Clichy, France
21. Maastricht University Medical Center [MUMC], Department of NUTRIM, Maastricht, The Netherlands
22. IBD unit, Radiology Department, Hospital Clínic of Barcelona, Barcelona, Spain
23. Tel Aviv Sourasky Medical Center, Department of Surgery, Tel Aviv, Israel