OC.10.8 PREDICTION OF TECHNICAL DIFFICULTY OF COLORECTAL ENDOSCOPIC SUBMUCOSAL DISSECTION (ESD): PROSPECTIVE STUDY TO FAVOR ITS PRACTICE IN THE WEST. (24th February 2016) - Iacopini, F.; Grossi, C.; Elisei, W.; Montagnese, F.; Saito, Y.; Andrei, F.; Gotoda, T.; Rigato, P.; Costamagna, G.