1. Hepatogastroenterology Unit, Second Department of Internal Medicine – Propaedeutic, Medical School, National and Kapodistrian University of Athens, Attikon University General Hospital, Athens, Greece
2. Department of Gastroenterology, Skåne University Hospital, Malmö, Lund University, Sweden
3. Department of Gastroenterology, Amsterdam University Medical Center, location VUMC, Amsterdam, The Netherlands
4. Sorbonne University, Center for Digestive Endoscopy, Hôpital Saint Antoine, APHP, Paris, France
5. Sheba Medical Center, Department of Gastroenterology, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
6. Division of Gastroenterology, Mater Dei Hospital, Malta
7. Complejo Hospitalario de Navarra, Pamplona, Spain
8. Clinic for Internal Medicine, Agaplesion Bethesda Krankenhaus Bergedorf, Hamburg, Germany
9. Department of Gastroenterology, South Tyneside District Hospital, South Tyneside and Sunderland NHS Foundation Trust, South Shields, UK
10. Gastroenterology Unit, Valduce Hospital, Como, Italy
11. Gastroenterology Department, Hospital da Senhora da Oliveira, Guimarães, Portugal
12. Digestive Endoscopy Unit and Gastroenterology, Fondazione Poliambulanza, Brescia, Italy
13. Servicio de Medicina Digestiva. Hospital General Universitario de Alicante, Instituto de Investigación Sanitaria ISABIAL, Alicante, Spain
14. Department of Gastroenterology, Queen Alexandra Hospital Portsmouth, Portsmouth, UK
15. Pomeranian Medical University, Department of Social Medicine and Public Health, Faculty of Health Science, Szczecin, Poland