1. Gastro Unit, Copenhagen University Hospital – Amager and Hvidovre, Hvidovre, Denmark
2. Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
3. Central Clinic of Augsburg – Gastroenterology, Augsburg, Germany
4. St. Paul’s Hospital Millennium Medical College – Department of Internal Medicine, Addis Ababa, Ethiopia
5. Kwame Nkrumah University of Science and Technology – Department of Medicine, Kumasi, Ghana
6. Enugu State University Teaching Hospital – Department of Medicine, Enugu, Nigeria
7. Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, “Sapienza” University of Rome, Rome, Italy
8. Gastroenterology and Digestive Endoscopy Unit, Ospedale dei Castelli Hospital, Ariccia, Rome, Italy
9. Australian National University Medical School, Canberra, Australia
10. Gastroenterology and Hepatology Unit, Canberra Hospital, Canberra, Australia
11. Department of Pathology, University of Sierra Leone Teaching Hospitals Complex, Freetown, Sierra Leone
12. Technische Universität München (TUM), Munich, Germany
13. University of Nigeria Teaching Hospital – Gastroenterology Unit, Department of Medicine, Enugu, Nigeria
14. Gastroenterology and Endoscopy, Edouard Herriot Hospital, Lyon, France
15. Gastroenterology, Georges-Pompidou European Hospital, Paris, France
16. Dept of transplantation medicine, Oslo University Hospital – Rikshospitalet, Oslo, Norway
17. Faculty of Medicine, University of Oslo, Norway
18. Department of Biomedical Sciences, Humanitas University, Milan, Italy
19. IRCCS Humanitas Research Hospital - Department of Gastroenterology, Milan, Italy