Fazzotta S, Genova G, Pantuso G, Buscemi S, Palumbo VD, Damiano G, Monte AI, Genova P. Intraoperative Cholangiography during Cholecystectomy Using a Biliary-nose Tube: Routinely Used in Patients with Main Bile Duct Stones. World J Lap Surg 2021; 14 (1):15-19.