1. Department of Surgery, Cantonal Hospital Winterthur, Winterthur, Switzerland
2. Faculty of Medicine, University of Basel, Basel, Switzerland
3. Department of Cellular Pathology, Royal Free Hospital, London, UK
4. Institute of Immunology and Immunotherapy, NIHR Biomedical Research Centre, University of Birmingham, UK
5. Division of Gastroenterology, University Hospitals Birmingham NHS Trust, UK
6. Division of Colon and Rectal Surgery, Humanitas Clinical and Research Center, Rozzano,Italy
7. Department of Biomedical Sciences, Humanitas University, Milan, Italy
8. Institute of Translational Medicine, University of Birmingham, Birmingham, UK
9. Gastroenterology Unit, Spedali Civili di Brescia, Brescia, Italy
10. Department of Abdominal Surgery, University Hospital Leuven, Leuven, Belgium
11. Department of Pathology, University Hospital Antwerp, University Antwerp, Edegem, Belgium
12. Department of Gastroenterology and Hepatology, University and Medical School of Ioannina, Ioannina, Greece
13. Department of Pathology, Amsterdam UMC, Amsterdam, The Netherlands
14. Department of Surgery, and Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
15. Department of Advanced Medical and Surgical Sciences, Universitá degli Studi della Campania ‘Luigi Vanvitelli’, Naples, Italy
16. Colorectal Unit, Vall d’Hebron University Hospital, Barcelona, Spain
17. Department of Surgery, Cantonal Hospital of Winterthur, Winterthur, Switerland; Division of Colon and Rectal Surgery, Humanitas Clinical and Research Center, Rozzano, Milan, Italy
18. Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
19. Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
20. Department of Histopathology, Cambridge Biomedical Campus, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
21. Division of Gastroenterology, IBD Center, Rabin Medical Center, Petah Tikva, Israel
22. Department of Pathology, Sorbonne Université, AP-HP, Saint-Antoine hospital, Paris, France