Affiliation: | 1. Division of Gastroenterology, University of Pisa, , Pisa, Italy;2. Division of Gastroenterology, University of Padua, , Padua, Italy;3. Obesity Research Center, Endocrinology Unit, University of Pisa, , Pisa, Italy;4. Department of Clinical and Experimental Medicine, University of Pisa, , Pisa, Italy;5. Division of Gastroenterology, University of Genoa, , Genoa, Italy;6. Digestive Pathophysiology Unit, New S. Agostino Hospital, , Modena, Italy |