Pan Y, Liu ZP, Dai HS, Chen WY, Luo Y, Wang YZ, Gao SY, Wang ZR, Dong JL, Liu YH, Yin XY, Liu XC, Fan HN, Bai J, Jiang Y, Cheng JJ, Zhang YQ, Chen ZY. Development of a model based on the age-adjusted Charlson comorbidity index to predict survival for resected perihilar cholangiocarcinoma. World J Gastrointest Oncol 2023; 15(6): 1036-1050 [PMID: 37389112 DOI: 10.4251/wjgo.v15.i6.1036]