Age-adjusted Charlson Comorbidity Index predicts survival in intrahepatic cholangiocarcinoma patients after curative resection

Wei-Feng Qu, Pei-Yun Zhou, Wei-Ren Liu, Meng-Xin Tian, Lei Jin, Xi-Fei Jiang, Han Wang, Chen-Yang Tao, Yuan Fang, Yu-Fu Zhou, Shu-Shu Song, Zhen-Bin Ding, Yuan-Fei Peng, Zhi Dai, Shuang-Jian Qiu, Jian Zhou, Jia Fan, Zheng Tang, Ying-Hong Shi