1 Digestive Endoscopy Unit, Fondazione Policlinico Universitario A. Gemelli, IRCCS; Center for Endoscopic Research Therapeutics and Training, Catholic University, Rome, Italy.
2 Gastroenterology and Digestive Endoscopy Unit, The Pancreas Institute, G. B. Rossi University Hospital, Verona, Italy.
3 Vita-Salute San Raffaele University; Division of Pancreato-Biliary Endoscopy and Endosonography, Pancreas Translational and Clinical Research Center, IRCCS San Raffaele Scientific Institute, Milan, Italy.