1. IBD Unit, Hull University Teaching Hospitals , Hull , UK
2. Hull York Medical School, University of Hull , Hull , UK
3. Northern Hospital Epping , Melbourne , Australia
4. University of Melbourne , Parkville, Melbourne , Australia
5. Department of Medicine, Karolinska Institutet , Solna, Stockholm , Sweden
6. Gastroenterology Unit, Department of Gastroenterology, Dermatovenereology and Rheumatology, Karolinska University Hospital , Stockholm , Sweden
7. Department of Advanced Medical and Surgical Sciences, Universitá degli Studi della Campania ‘Luigi Vanvitelli’ , Naples , Italy
8. Colorectal Surgery Unit, Pontificia Universidade Católica do Paraná [PUCPR] , Curitiba , Brazil
9. Department of Surgery, Cantonal Hospital Winterthur , Winterthur , Switzerland
10. Faculty of Medicine, University of Basel , Basel , Switzerland
11. Department of Gastroenterology and Hepatology, University Medical Centre Groningen , Groningen , the Netherlands
12. Cambridge Colorectal Unit, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust , Cambridge , UK
13. Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center Rotterdam , Rotterdam , the Netherlands
14. Gastroenterology Department, Hospital General Universitario de Alicante, ISABIAL and CIBERehd , Alicante , Spain
15. OpenSourceResearch organisation (osrc.network) , Aalborg , Denmark
16. Clinic for Visceral Surgery and Medicine, Inselspital, University Hospital of Bern , Bern , Switzerland
17. Department of Gastroenterology, Guy’s and Saint Thomas’ Hospitals NHS Trust , London , UK
18. General Surgery, Colorectal Unit, Hospital Universitari i Politecnic La Fe , Valencia , Spain
19. Department of Biomedical Sciences, Humanitas University , Milan , Italy
20. IRCCS Humanitas Research Hospital , Milan , Italy