1. Gastro Unit, Division of Endoscopy, Copenhagen University Hospital Herlev, Copenhagen, Denmark
2. Gastro Unit, Division of Surgery, Copenhagen University Hospital Hvidovre, Copenhagen, Denmark
3. Department of Gastroenterology, Klinikum Augsburg, Augsburg, Germany
4. Endoscopy, Oslo University Hospital – Rikshospitalet, Oslo, Norway
5. CIDES/CINTESIS, Faculty of Medicine, University of Porto, Porto, Portugal
6. GI Outcomes Unit, Department of Gastroenterology, Rambam Health Care Campus, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
7. Gastroenterology Department, Erasme University Hospital, Brussels, Belgium
8. Gastroenterology Unit, Department of Medicine, University of Nigeria Teaching Hospital, Ituku-Ozala, Nigeria
9. Department of Medicine, Enugu State University Teaching Hospital, Enugu, Nigeria
10. Department of Medicine, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
11. Department of Pathology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
12. Gastroenterology and Endoscopy, Edouard Herriot Hospital, Lyon, France
13. Endoscopy Unit, Nuovo Regina Margherita Hospital, Rome, Italy