1. Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, P.R. China
2. Department of Hepatobiliary Surgery, Subei People's Hospital, Yangzhou University, Yangzhou 225000, China
3. Department of Hepatobiliary Surgery, Second Affiliated Hospital of Kunming Medical University, Kunming 650101, China
4. Cancer Research Institute, Xiangya School of Medicine, Central South University, Hunan 410008, China