1 Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy. ivo.boskoski@policlinicogemelli.it.
2 Centre for Endoscopic Research Therapeutics and Training (CERTT), Università Cattolica del Sacro Cuore di Roma, Rome, Italy. ivo.boskoski@policlinicogemelli.it.
3 Digestive Endoscopy Unit, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Largo A. Gemelli, 8, 00168, Rome, Italy.
4 Centre for Endoscopic Research Therapeutics and Training (CERTT), Università Cattolica del Sacro Cuore di Roma, Rome, Italy.