P.05.37 EXTERNAL FIXATION: A COST-EFFECTIVE TECHNIQUE TO PREVENT MEGASTENT MIGRATION IN LEAK FOLLOWING BARIATRIC SURGERY. (25th March 2019) - Zito, F.P.; D'Alessandro, A.; Napoletano, D.; Sessa, E.; Russo, C.; Ciccarelli, G.; Giardiello, C.; Galasso, G.