1. Department of Gastroenterology and Hepatology, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, The Netherlands
2. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
3. Endoscopy Unit, IRCCS Humanitas Clinical and Research Center, Rozzano, Milan, Italy
4. Department of Epidemiology and Data Science, Amsterdam University Medical Center, location VUmc, Amsterdam, The Netherlands
5. Department of Gastroenterology and Hepatology, Radboud University Medical Center, Radboud University, Nijmegen, The Netherlands
6. Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, “Sapienza” University of Rome, Rome, Italy
7. Gastroenterology and Digestive Endoscopy Unit, Ospedale dei Castelli Hospital, Ariccia, Rome, Italy
8. Gastrointestinal Endoscopy Unit, Digestive Diseases Department, La Fe Polytechnic University Hospital, Valencia, Spain
9. Gastrointestinal Endoscopy Research Group, La Fe Health Research Institute, Valencia, Spain
10. Institut des Maladies de l'Appareil Digestif, Nantes, France
11. Division of Gastroenterology, University of Balamand, Faculty of Medicine, St. George Hospital University Medical Center, Beirut, Lebanon
12. Porto Comprehensive Cancer Center (Porto.CCC), Porto, Portugal
13. RISE@CI-IPOP (Health Research Network), Porto, Portugal
14. Gastroenterology Department, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu Mures, Targu Mures, Romania
15. Translational Gastroenterology Unit, Nuffield Department of Medicine, Experimental Medicine Division, John Radcliffe Hospital, University of Oxford, Oxford, UK
16. Division of Gastroenterology and Hepatology, Mayo Clinic Healthcare, London
17. Institute of Translational of Medicine, Institute of Immunology and Immunotherapy and NIHR Biomedical Research Centre, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
18. Servicio de Medicina Digestiva, Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria ISABIAL, Universidad Miguel Hernández, Alicante, Spain
19. Endoscopy Department, Yaroslavl Regional Cancer Hospital, Yaroslavl, Russian Federation
20. Department of Gastroenterology, Faculty of Additional Professional Education, N.A. Pirogov Russian National Research Medical University, Moscow, Russian Federation
21. Department of Medicine I, University Medical Center Mainz, Mainz, Germany
22. GastroZentrum, Lippe, Germany
23. Department of Gastroenterology, Hospital Clínic de Barcelona, Barcelona, Spain
24. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Universitat de Barcelona, Barcelona, Spain
25. Digestive Diseases Department, Althaia Xarxa Assistencial Universitària de Manresa, Manresa, Spain
26. Department of Medicine, Facultat de Ciències de la Salut, Universitat de Vic-Universitat Central de Catalunya (UVic-UCC), Manresa, Spain
27. Faculty of Medical Sciences, Newcastle University, Newcastle-upon-Tyne, UK
28. University Hospital of North Tees , Stockton-on-Tees, UK
29. Department of Gastroenterology, St Mark's Hospital and Academic Institute, Harrow, UK
30. Department of Gastroenterology and Hepatology, University of Ghent, Ghent, Belgium
31. University Hospital Ghent, Ghent, Belgium
32. Clinical Effectiveness Research Group, Institute of Health and Society, University of Oslo, Oslo, Norway
33. Section of Gastroenterology, Department of Transplantation Medicine, Oslo University Hospital, Oslo, Norway
34. Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
35. Portsmouth Hospitals University NHS Trust, Cosham, Portsmouth, UK
36. Department of Gastroenterology and Hepatology, Catholic University of Leuven, (KUL), TARGID, University Hospital Leuven, Leuven, Belgium