1. Gastroenterology Department, Colentina Clinical Hospital, 19–21 Stefan Cel Mare Bvd, Spitalul Clinic Colentina, Pavilion B, Gastroenterologie, Bucharest, Romania
2. Gastroenterology Department, Colentina Clinical Hospital, Bucharest, Romania
3. Internal Medicine Department, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
4. Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
5. Center for Endoscopic Research Therapeutics and Training (CERTT), Catholic University of Rome, Italy
6. Department of Gastroenterology, Hepatopancreatology, and Digestive Oncology, CUB Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
7. Department of Gastroenterology and Hepatology, University Hospitals Gasthuisberg, University of Leuven, Leuven, Belgium
8. Division of Gastroenterology; Medical Department II (Oncology, Gastroenterology, Hepatology, Pulmonology, Infectious Diseases), University of Leipzig Medical Center, Leipzig, Germany
9. Gastroenterology Department, Colentina Clinical Hospital Bucharest, Romania