1 Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China; Department of Clinical Medicine, Second Military Medical University, Shanghai 200433, China.
2 Department of Oncology, Affiliated Zhongshan Hospital of Guangdong Medical University, Guangdong 528415, China.
3 Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China.
4 Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China. Electronic address: yangtiandfgd@hotmail.com.