1. Department of Hepatobiliary Surgery The First Affiliated Hospital of Xi'an Jiaotong University 710061 Xi'an Shaanxi China
2. Department of Industrial Engineering School of Mechanical Engineering Northwestern Polytechnical University 710072 Xi'an Shaanxi China
3. Department of Hepatobiliary and Pancreatic Surgery West China Hospital of Sichuan University 610041 Chengdu China
4. Department of Biliary Surgery Oriental Hepatobiliary Hospital Affiliated to Naval Medical University 200433 Shanghai China
5. Department of Hepatobiliary Oncology Tianjin Medical University Cancer Hospital 300060 Tianjin China
6. Department of Hepatobiliary Surgery Hunan Provincial People's Hospital 410005 Changsha China
7. Department of Hepatobiliary Surgery The First Hospital Affiliated to Army Medical University 400038 Chongqing China
8. Department of Hepatobiliary Surgery Zhongda Hospital of Southeast University 210009 Nanjing China
9. Hepatobiliary Pancreas and Liver Transplantation Surgery The First Affiliated Hospital of Zhengzhou University 450052 Zhengzhou China
10. Department of Hepatobiliary Surgery Affiliated Hospital of North Sichuan Medical College 637000 Nanchong China
11. Department of General Surgery Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine 200092 Shanghai China