1. Department of Hepatic Surgery IV and Clinical Research Institute, The Eastern Hepatobiliary Surgery Hospital, Naval Medical University , Shanghai, P. R. China
2. Department of Liver Surgery and Organ Transplantation, The Changzheng Hospital, Naval Medical University , Shanghai, P. R. China
3. Department of General Surgery, The Affiliated Zhongda Hospital, Southeast University , Nanjing, Jiangsu, P. R. China
4. Department of Hepatic Surgery II and Clinical Research Institute, The Eastern Hepatobiliary Surgery Hospital, Naval Medical University , Shanghai, P. R. China
5. Department of Biliary Surgery IV and Clinical Research Institute, The Eastern Hepatobiliary Surgery Hospital, Naval Medical University , Shanghai, P. R. China
6. Department of Chinese Traditional Medicine, The Eastern Hepatobiliary Surgery Hospital, Naval Medical University , Shanghai, P. R. China
7. Department of Surgery, The Wexner Medical Center, Ohio State University , Columbus, OH, USA
8. Faculty of Medicine, the Chinese University of Hong Kong, Prince of Wales Hospital , Shatin, New Territories, Hong Kong SAR, China