Affiliation: | 1. Division of Gastroenterology and Digestive Endoscopy, Hospital A. Cardarelli, Via San Domenico 24, 80127 Naples, Italy;2. Gastroenterology and Digestive Endoscopy Unit, L. Curto Hospital, Polla, Italy;3. Division of Surgical Digestive System, University Hospital Second University of Naples, Naples, Italy |