1 Digestive Endoscopy Unit, Foundation University Policlinico Hospital A. Gemelli, IRCCS, Rome, Italy.
2 Digestive Endoscopy Unit, Foundation University Policlinico Hospital A. Gemelli, IRCCS, Rome, Italy; Department of Gastroenterology, Colentina Clinical Hospital, Carol Davila University of Medicine, Bucharest, Romania.
3 Gastroenterology and Digestive Endoscopy Unit, Pancreas Institute, University Hospital of Verona, Verona, Italy.
4 Digestive Endoscopy Unit, Foundation University Policlinico Hospital A. Gemelli, IRCCS; Division of Gastroenterology, Foundation University Policlinico Hospital A. Gemelli, IRCCS, Catholic University, Rome, Italy.
5 Division of Gastroenterology, Foundation University Policlinico Hospital A. Gemelli, IRCCS, Catholic University, Rome, Italy.
6 Digestive Endoscopy Unit, Foundation University Policlinico Hospital A. Gemelli, IRCCS, Catholic University, Rome; IHU-USIAS, University of Strasbourg, Strasbourg, France.