Tartaglia, D.; Piccini, L.; Musetti, S.; Bertolucci, A.; Cobuccio, L.; Fantacci, R.; Bianchini, M.; Zocco, G.; Galatioto, C.; Chiarugi, M. A Delayed Conversion May Increase the Risk of Major Complications in Acute Cholecystitis Approached Laparoscopically. A Retrospective Comparative Cohort Study. Ann Ital Chir 2019, 90, 213-219.