OC.10.6 POST-SPHINCTEROTOMY TRANSPAPILLARY BALLOON DILATION FOR REMOVAL OF LARGE BILE DUCT STONE IS MORE EFFECTIVE AND SAFE COMPARED TO ENDOSCOPIC SPHINCTEROTOMY? A META-ANALYSIS. (24th February 2016) - Tringali, A.; Sica, M.; Manta, R.; Mutignani, M.