Liver transplantation for hepatocellular carcinoma: a proposal for including preoperative serological indicators improves the Milan criteria expanded

Ning Jiao, Cheng Yan, Li He, Hai-Long Jin, Shuang Oiu, Chao Li, Zhi-Sheng Zheng, Bin Lu, Feng-Dong Wu, Yang Yang, Xin-Guo Chen, Qing Zhang