1. Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, Amsterdam, The Netherlands
2. Institute of Immunology and Immunotherapy, NIHR Birmingham Biomedical Research Centre, University Hospitals NHS Foundation Trust, University of Birmingham, Birmingham, UK
3. Royal Free Unit for Endoscopy, The Royal Free Hospital and University College London Institute for Liver and Digestive Health, London, UK
4. Department of Gastroenterology and Hepatology, University Hospital Leuven, TARGID, KU Leuven, Leuven, Belgium
5. Department of Gastroenterology, Hepatology and Oncology, Medical Center for Postgraduate Education, Warsaw, Poland
6. Department of Gastroenterological Oncology, The Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
7. Department of Health Management and Health Economics, University of Oslo, Oslo, Norway
8. Department of Gastroenterology, University of Navarre Clinic, Healthcare Research Institute of Navarre, Pamplona, Spain
9. University of Balamand Faculty of Medicine, St. George Hospital University Medical Center, Beirut, Lebanon
10. Translational Gastroenterology Unit, Nuffield Department of Medicine, John Radcliffe Hospital, University of Oxford, Oxford, UK
11. Division of Gastroenterology and Hepatology, Mayo Clinic Healthcare, London, UK
12. Gastroenterology Unit, Copenhagen University Hospital – Amager and Hvidovre, Hvidovre, Denmark
13. Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
14. Clinic for Internal Medicine, Agaplesion Bethesda Krankenhaus Bergedorf, Hamburg, Germany
15. Endoscopy Unit, Royal College of Surgeons of Ireland Hospitals Group, Dublin, Ireland
16. Institute of Translational Medicine and Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
17. Gastroenterology, Department of Clinical Medicine and Surgery, University Federico II of Naples, Naples, Italy
18. Department of Medicine I, University Medical Center Mainz, Mainz, Germany
19. Department of Internal Medicine, Digestive Diseases and Endoscopy, New Mowasat Hospital, Salmiya, Kuwait
20. Gastroenterology Department, Endoscopy Unit, ICMDiM, Hospital Clinic, CIBEREHD, IDIBAPS, University of Barcelona, Catalonia, Spain
21. Department of Gastroenterology, University Hospital of Nancy, Nancy, France
22. Department of Gastroenterology, University Hospital of North Tees, Stockton-on-Tees, Cleveland, UK