Liver resection for hilar cholangiocarcinoma in patients over 70 years: does preoperative cholangitis exclude older patients from surgery?. (2019) - D'Amico, F.E.; Gringeri, E.; Finotti, M.; Fasolo, E.; Boetto, R.; Noaro, G.; Romano, M.; Zanus, G.; Bassi, D.; Cillo, U.