V.01.7 ENDOSCOPIC ULTRASOUND-GUIDED SINGLE-INCISION WITH NEEDLE KNIFE AND DEEP TISSUE BIOPSY FOR THE DIAGNOSIS OF A GASTRIC SUBEPITHELIAL TUMOR. (24th February 2016) - Antonini, F.; Belfiori, V.; Santinelli, A.; De Minicis, S.; Lo Cascio, M.; Marraccini, B.; Piergallini, S.; Rossetti, P.; Andrenacci, E.; Macarri, G.