1. Department of Gastroenterology and Hepatology University Hospitals Leuven Leuven Belgium
2. Division of Gastroenterology Rabin Medical Center Beilinson Hospital Petach Tikwa Israel
3. University of Medicine and Pharmacy Gr T Popa Iasi and University Hospital St Spiridon Iasi Romania
4. Department of Gastroenterology and Hepatology Wroclaw Medical University Wroclaw Poland
5. University Hospital Germans Trias I Pujol and Centro de Investigación Biomédica en Red de enfermedades Hepáticas y Digestivas (CIBERehd) Badalona Spain
6. Department of Internal Medicine VI: Psychosomatic Medicine and Psychotherapy University Hospital Tübingen Tübingen Germany
7. CIBERehd and Departament de Medicina Digestive System Research Unit University Hospital Vall D'Hebron Barcelona Spain
8. Department of Medical and Surgical Sciences University of Bologna Bologna Italy
9. Division of Gastroenterology School of Medicine Ege University Izmir Turkey
10. Université de Paris and AP‐HP Hôpital Louis Mourier Paris France
11. NIHR Nottingham Biomedical Research Centre (BRC) Hospitals NHS Trust and the University of Nottingham Nottingham UK
12. Department of Gastroenterology and Hepatology University Hospital Antwerp Antwerp Belgium
13. 2nd Department of Internal Medicine Iuliu Hatieganu University of Medicine and Pharmacy Cluj‐Napoca Romania
14. Wingate Institute of Neurogastroenterology Barts and London School of Medicine and Dentistry Queen Mary University of London London UK
15. Physiology Department Rouen University Hospital Rouen France
16. Medical Faculty Rijeka University of Rijeka and Clinical Hospital Centre Rijeka Rijeka Croatia
17. Department of Gastroenterology Haukeland University Hospital Bergen Norway
18. Gastroentrology Unit Aretaieio Hospital National and Kapodistrian University of Athens Athens Greece
19. Division of Gastroenterology‐Hepatology Maastricht University Medical Center Maastricht The Netherlands
20. Department of Gastroenterology Euromedik Hospital Belgrade Belgrade Serbia
21. Department of General Practice Caphri Institute Maastricht University Maastricht The Netherlands
22. Department of Medicine Trinity College Dublin and National Clinical Lead for Gastroenterology and Hepatology Royal College Physicians Ireland Dublin Ireland
23. Private Practice Ioannina Greece
24. Division of Gastroenterology and Hepatology University Hospital Zurich Zurich Switzerland
25. I.M. Sechenov First Moscow State Medical University Ministry of Health of the Russian Federation (Sechenov University) Moscow Russia
26. Department of Clinical Medicine and Surgery University of Naples Federico II Naples Italy
27. Gastroenterology Unit Departmento of Surgery Oncology and Gastroenterology University of Padua Padua Italy
28. Laboratory of Experimental Medicine and Pediatrics and InflA−Med Centre of Excellence University of Antwerp Antwerp Belgium
29. Department of Psychosomatic Medicine and Psychotherapy Internal Medicine VI University Hospital Tübingen and Charité Center for Internal Medicine and Dermatology Tübingen Germany
30. Department for Psychosomatic Medicine Charité‐Universitätsmedizin Freie Universität Berlin Humboldt‐Universität zu Berlin and Berlin Institute of Health Berlin Germany
31. Center of Endoscopy Starnberg Germany
32. Ludwig‐Maximilians‐University Munich Germany
33. Department of Internal Medicine Sahlgrenska University Hospital Gothenburg Sweden
34. Sheba Medical Center Tel Hashomer Israel
35. Department of Gastroenterology and Hepatology Medical University of Silesia Katowice Poland
36. Gastrointestinal Physiology Unit University College London Hospital London UK
37. CHU de Bordeaux Centre Medico‐chirurgical Magellan Hôpital Haut‐Lévêque and Gastroenterology Department Université de Bordeaux INSERM CIC Bordeaux France