1Digestive Endoscopy Unit, ASST Niguarda, Milan, Italy
2Gastroenterology Unit, Azienda Ospedaliera Santi Antonio e Biagio e Cesare Arrigo, Alessandria, Italy
3Digestive Endoscopy Unit, Fondazione Policlinico Gemelli IRCCS, Rome, Italy
4CERTT, Center for Endoscopic Research Therapeutics and Training, Catholic University, Rome, Italy
✉Corresponding author Lorenzo Dioscoridi MD, PhD ASST Niguarda, Piazza Dell’Ospedale Maggiore 3, 20162, Milan, Italy, FAX: +02644411, Email: dioscoridi.lorenzo@virgilio.it
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