[1] Humanitas Mater Domini, Gastrointestinal Endoscopy Unit, Castellanza, Italy
[2] Univ Foggia, Dept Med & Surg Sci, Endoscopy Unit, Foggia, Italy
[3] ASST Rhodense, Garbagnate Milanese, Gastroenterol & Endoscopy Unit, Milan, Italy
[4] IRCCS ISMETT, Dept Diagnost & Therapeut Serv, Digest Endoscopy Serv, Palermo, Italy
[5] IRCCS Azienda Osped Univ Bologna, Div Gastroenterol & Endoscopy, Bologna, Italy
[6] Univ Bologna, Hosp Imola, Gastroenterol Unit, Imola, Italy
[7] Campus Biomed Univ & Teaching Hosp, Unit Resp Pathophysiol, Geriat, Rome, Italy
[8] Univ Roma Tor Vergata, Dept Syst Med, Gastroenterol Unit, Rome, Italy
[9] IRCCS ISMETT, Dept Treatment & Study Cardiothorac Dis & Cardiot, Thorac Surg, Palermo, Italy
[10] Univ Cincinnati, Div Digest Dis, Cincinnati, OH USA
[11] Morgagni Pierantoni Hosp & Bufalini Hosp, Digest Endoscopy & Gastroenterol Unit, AUSL Romagna, Forli Cesena, Italy
[12] Humanitas Univ, Pieve Emanuele, Italy
[13] Humanitas Res Hosp, Digest Endoscopy Unit, Milan, Italy