1. Department of Hepatobiliary Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
2. Department of Hepatobiliary Surgery, Capital Medical University Affiliated Beijing Friendship Hospital, Beijing, China
3. Department of Hepatobiliary Surgery, The First Affiliated Hospital of USTC, Hefei, China
4. Clinical Research Center of Oncology, Lishui Hospital of Zhejiang University, Lishui, China
5. Department of Hepatobiliary Surgery, Lanzhou University First Affiliated Hospital, Lanzhou, China
6. Department of Hepatobiliary Surgery, The Affiliated Hospital of Guizhou Medical University, Guizhou, China
7. Department of Hepatobiliary Surgery, Jiujiang First People's Hospital, Jiujiang, China
8. Department of Hepatobiliary Surgery, Xijing Hospital, Fourth Military Medical University (Air Force Medical University), Xi'an, China
9. Department of Hepatobiliary Surgery, Zhejiang University School of Medicine Second Affiliated Hospital, Hangzhou, China
10. Department of Hepatobiliary Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
11. Department of Hepatobiliary Pancreatic Surgery, Henan Provincial Tumor Hospital, Zhengzhou, China
12. Department of Hepatobiliary Surgery, Xi 'an Jiaotong University Medical College First Affiliated Hospital, Xi 'an, China
13. Department of Hepatobiliary Surgery, Sun Yat-sen University First Affiliated Hospital, Zhongshan, China
14. Department of Health Statistics, College of Military Preventive Medicine, Third Military Medical University (Army Medical University), Chongqing, China
15. Faculty of Medicine, the Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China