1. Department of Gastroenterology, Royal Devon and Exeter Hospital NHS Foundation Trust, Exeter, England
2. IBD Pharmacogenetics Group, University of Exeter, Exeter, England
3. University of Exeter Medical School, Exeter, England
4. Department of Gastroenterology and Hepatology, University Medical Center Groningen, Groningen, the Netherlands
5. Medical Department, Regional Hospital Viborg, Viborg, Denmark
6. Wellcome Trust Sanger Institute, Hinxton, England
7. Department of Gastroenterology, Massachusetts General Hospital, Boston
8. Department of Gastroenterology, Saint-Antoine Hospital and Sorbonne Universite, Paris, France
9. Derby Digestive Diseases Centre, Royal Derby Hospital, Derby Teaching Hospitals NHS Foundation Trust, Derby, England
10. Department of Gastroenterology, Southampton General Hospital, University Hospital Southampton NHS Foundation Trust, Southampton, England
11. Broad Institute, Harvard University, Cambridge, Massachusetts
12. Department of Gastroenterology, Mater Dei Hospital, Msida, Malta
13. Division of Gastroenterology, University of Alberta, Edmonton, Canada
14. Mater Research Institute, University of Queensland, South Brisbane, Australia
15. Department of Gastroenterology, Glasgow Royal Infirmary, NHS Greater Glasgow and Clyde, Glasgow, Scotland
16. Division of Gastroenterology, Örebro University, Örebro, Sweden
17. Department of Gastroenterology, St Mark’s Hospital, London North West Healthcare NHS Trust, Harrow, England
18. Department of Gastroenterology, Guy’s and St Thomas’ NHS Foundation Trust, London, England
19. Centre for Immunobiology, Blizard Institute, Barts and the London School of Medicine, Queen Mary University of London, London, England
20. Department of Gastroenterology, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, England
21. F. Widjaja Foundation Inflammatory Bowel Disease and Immunobiology Research Institute, Cedars-Sinai Medical Center, Los Angeles, California
22. Department of Gastroenterology, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, England
23. Department of Gastroenterology, St George’s Healthcare NHS Trust, Tooting, England
24. Gastrointestinal and Liver Services, Warrington and Halton Hospitals NHS Foundation Trust, Warrington, England
25. Department of Gastroenterology, Royal London Hospital, Barts Health NHS Trust, London, England
26. Department of Paediatric Gastroenterology, Royal Hospital for Children, NHS Greater Glasgow and Clyde, Glasgow, Scotland
27. Dunedin Hospital, Dunedin, New Zealand
28. Gastroenterology and Hepatology, Hull and East Yorkshire Hospitals NHS Trust, Hull, England
29. Canberra Hospital, Canberra, Australia
30. Department of Haematology, Royal Devon and Exeter Hospital NHS Foundation Trust, Exeter, England
31. Division of Gastroenterology, Azienda Ospedaliero Universitaria Careggi, Florence, Italy