[1] IRCCS Humanitas Res Hosp, Dept Gastroenterol, Endoscopy Unit, Milan, Italy
[2] Humanitas Univ, Dept Biomed Sci, Milan, Italy
[3] Azienda USL Modena, Gastroenterol & Digest Endoscopy Unit, Modena, Italy
[4] Campus Biomed Univ, Digest Endoscopy Unit, Rome, Italy
[5] Campus Biomed Univ Hosp, Operat Endoscopy Dept, Rome, Italy
[6] Forli Cesena Hosp, Gastroenterol & Digest Endoscopy Unit, AUSL Romagna, Forli Cesena, Italy
[7] Cent Hosp Azienda Osped, Div Gastroenterol & Digest Endoscopy, Dept Med Sci, Taranto, Italy
[8] Candiolo Canc Inst, Digest Endoscopy Unit, Turin, Italy
[9] Natl Canc Inst CRO Aviano, Oncol Gastroenterol, Aviano, Italy
[10] Regina Elena Inst Canc Res, Gastroenterol & Digest Endoscopy, Rome, Italy
[11] Aziende Socio Sanit Terr Rhodense, Gastroenterol & Endoscopy Unit, Milan, Italy
[12] Univ Turin, Dept Med Sci, Gastro Hepatol Unit, Turin, Italy
[13] Univ Foggia, Dept Med & Surg Sci, Foggia, Italy