1. Gastroenterology Unit, Department of Surgical and Medical Sciences, University of Foggia, Foggia, Italy
2. Gastroenterology and Digestive Endoscopy Unit, Department of Medicine, The Pancreas Institute, University Hospital of Verona, Verona, Italy
3. Endoscopic Unit, Department of Gastroenterology, IRCCS Humanitas Research Hospital, Milan, Italy
4. Department of Biomedical Sciences, Humanitas University, Milan, Italy
5. Gastroenterology and Hepatology, University of Utah Health, Salt Lake City, United States
6. Gastrointestinal Endoscopy Unit, Humanitas – Mater Domini, Castellanza, Italy
7. Division of Gastroenterology and Hepatology, CHI Creighton University Medical Center, Omaha, United States
8. Department of Gastroenterology, “Konstantopouleion-Patision” General Hospital of Nea Ionia, Athens, Greece