1. Translational Gastroenterology and Liver Unit, University of Oxford , Oxford , UK
2. Department of Epidemiology, Lazio Regional Health Service , Rome , Italy
3. Department of Gastroenterology, Sheba Medical Center , Ramat Gan , Israel
4. Department Gastroenterology & Hepatology, University Hospitals Leuven , KU Leuven , Leuven , Belgium
5. Department of Chronic Diseases and Metabolism, KU Leuven , Leuven , Belgium
6. Gastroenterology Department. Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa [IIS-Princesa], Universidad Autónoma de Madrid [UAM], Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas [CIBEREHD] , Madrid , Spain
7. Department of Surgery , Amsterdam UMC, Location VUMC, Amsterdam , The Netherlands
8. Department of Colorectal Surgery , St Mark’s Hospital London , United Kingdom
9. Dr Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai , New York, NY , USA
10. Center for Molecular Prediction of Inflammatory Bowel Disease [PREDICT], Department of Clinical Medicine, Aalborg University , Copenhagen , Denmark
11. IRCCS Hospital San Raffaele and University Vita-Salute San Raffaele, Gastroenterology and Endoscopy , Milan , Italy
12. First Department of Medicine, Friedrich-Alexander-University Erlangen-Nürnberg , Erlangen , Germany
13. Division of Gastroenterology, Centre Hospitalier de l’Université de Montréal , Montreal, QC , Canada
14. CED Schwerpunktpraxis, Münster and Medical Faculty of the University of Münster , Münster , Germany
15. Department of Abdominal Surgery, University Hospitals Leuven , Leuven , Belgium
16. Department of Surgery, Sheffield Teaching Hospitals , Sheffield , UK
17. Gastrounit, Medical Division, Copenhagen University Hospital - Amager and Hvidovre, Hvidovre, Denmark; Copenhagen Center for Inflammatory Bowel Disease in Children, Adolescents and Adults; Copenhagen University Hospital - Amager and Hvidovre , Hvidovre , Denmark
18. Department of Clinical Medicine, University of Copenhagen , Copenhagen , Denmark
19. Florence Nightingale Faculty of Nursing, Midwifery and Palliative Care, King’s College London , London , UK
20. Colorectal Surgery, Royal Surrey NHS Foundation Trust , Guildford , UK
21. Department of Surgery, OpenSourceResearch Organization [OSRC.Network] , Aalborg , Denmark
22. Division of Gastroenterology, Mater Dei Hospital , L-Imsida , Malta
23. Division of Gastroenterology, Hospital Beatriz Ângelo , Loures, Portugal
24. Division of Gastroenterology, Hospital da Luz , Lisboa , Portugal
25. IBD Unit, San Camillo-Forlanini Hospital , Rome , Italy
26. Department of Gastroenterology, University Medical Centre Ljubljana , Ljubljana, Slovenia
27. Department of Internal Medicine, Faculty of Medicine, University of Ljubljana , Ljubljana , Slovenia
28. Department of Colon & Rectal Surgery, Cleveland Clinic , Cleveland, OH , USA
29. APC Microbiome Ireland, College of Medicine and Health, University College of Cork , Cork , Ireland
30. Department of Surgery, Worcestershire Acute Hospitals NHS Trust , Worcester , UK
31. Department of Gastroenterology, Attikon University Hospital , Athens , Greece
32. Department of Gastroenterology, Venizeleio General Hospital , Heraklion , Greece
33. Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital , Tokyo , Japan
34. Health Sciences Postgraduate Program, Pontificia Universidade Católica do Paraná [PUCPR] , Curitiba , Brazil
35. Department of Public Health, University of Naples Federico II , Naples , Italy
36. Outpatients Department of Gastroenterology, University Teaching Hospital Lueneburg , Lueneberg , Germany
37. National Institute of Health Research Nottingham Biomedical Research Centre, University of Nottingham and Nottingham University Hospitals , Nottingham, UK
38. Translational Medical Sciences, School of Medicine, Faculty of Medicine and Health Sciences, University of Nottingham , Nottingham , UK
39. Department of Medicine, University of Cambridge, School of Clinical Medicine , Cambridge , UK
40. Center for Inflammatory Bowel Diseases, Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School , Boston, MA , USA
41. Department of Surgery, Cantonal Hospital Winterthur , Winterthur , Switzerland
42. Gastroenterology Department, Chu Liege , Liege , Belgium
43. Department of Surgery, Università Tor Vergata , Roma , Italy
44. Pediatric Gastroenterology and Nutrition Unit, E. Wolfson Medical Center , Holon , Israel
45. Tytgat Institute for Liver and Intestinal Research, Amsterdam Gastroenterology Endocrinology and Metabolism, University of Amsterdam , Amsterdam , The Netherlands
46. Department of Gastroenterology and Hepatology, University Hospital Zürich , Zürich , Switzerland
47. IBD Center, Division of Gastroenterology, Rabin Medical Center, Petah Tikva; Faculty of Medical & Health Sciences, Tel Aviv University , Tel Aviv , Israel
48. Department of Surgery and Department of Biomedical and Clinical Sciences, Linköping University , Linköping , Sweden
49. Department of Surgery, Cantonal Hospital of Fribourg & Faculty of Science and Medicine, University of Fribourg , Fribourg , Switzerland
50. Department of Gastroenterology, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust , Cambridge , UK