T03.01.22 IMAGING FINDING OF SMALL STONES IS ASSOCIATED TO A HIGHER RISK OF UNNECESSARY ERCP: RESULTS OF A RETROSPECTIVE, MULTICENTER STUDY. (1st October 2020) - Andreozzi, P.; De Nucci, G.; Devani, M.; Redaelli, D.; Schettino, M.; Iuliano, D.; Gagliardi, M.; Maurano, A.; Bottiglieri, M.E.; Paspatis, G.; Dinelli, M.; Manes, G.