1. Department of Medicine, Gastroenterology and Digestive Endoscopy Unit, The Pancreas Institute, G.B. Rossi University Hospital, Verona, Italy
2. Department of Gastroenterology, Hepatopancreatology, and Digestive Oncology, CUB Erasme Hospital, Université Libre de Bruxelles (ULB), Brussels, Belgium
3. University of Cincinnati Medical Center, Division of Digestive Diseases and Hepatology, Cincinnati, Ohio, USA
4. Digestive Endoscopy Unit, Department of Medical Sciences, University of Foggia, Foggia, Italy