1. Department of Digestive Internal, Yangpu Shidong Hospital, Anhui Medical University, Shanghai, China
2. National Liver Tissue Bank, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
3. Department of Colorectal Surgery, Changhai Hospital, Second Military Medical University, Shanghai, P.R. China
4. Department of Pancreatic Surgery, Changhai Hospital, Second Military Medical University, Shanghai, China
5. Department of Hepatobiliary Surgery, General Hospital of Southern Theatre Command, Guangzhou, China
6. Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China