1. Department of Hepatobiliary Surgery, General Hospital of Ningxia Medical University, Yinchuan, Ningxia, China
2. Department of Hepatobiliary Surgery, Ningxia Hepatobiliary and Pancreatic Surgical Diseases Clinical Medical Research Center, Yinchuan, Ningxia, China
3. Department of Hepatobiliary Surgery, Ningxia Medical University, Yinchuan, Ningxia, China
4. Department of Hepatobiliary Surgery, People’s Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia, China