1. Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai, China
2. Shanghai Chest Hospital, Shanghai Jiao Tong University, Department of Pathology, Shanghai, China
3. Department of Liver Surgery, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Shanghai, China
4. Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China