1. 1Department of Hepatobiliary Surgery, the Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, China.
2. 2Department of Hepatobiliary Surgery, Nanjing Drum Tower Hospital Clinical College of Jiangsu University, Nanjing, China.
3. 3Department of Hepatobiliary Surgery, Affiliated Drum Tower Hospital, Nanjing University of Chinese Medicine, Nanjing, China.