P.01.21 H. PYLORI RESISTANCE STATUS AND EFFICACY OF SEQUENTIAL THERAPY FOR FIRST-LINE THERAPY: A 6-YEAR EXPERIENCE IN A SINGLE ITALIAN CENTER. Issue 2 (15th March 2018) - Fiorini, G.; Zullo, A.; Saracino, I.M.; Gatta, L.; Pavoni, M.; Vaira, B.