1. Department of Surgery, BenQ Medical Center, The Affiliated BenQ Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China.
2. Department of Surgery, Jinling Hospital, Nanjing Medical University, Nanjing, Jiangsu Province, China.
3. Department of Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu Province, China.
4. Department of General Surgery, The First Teaching Hospital of Xinjiang Medical University, Wulumuqi, Xinjiang Province, China.
5. Department of General Surgery, Lu'an People's Hospital, Lu'an, Anhui Province, China.
6. Department of Gastrointestinal Surgery, Tengzhou Central People's Hospital, Tengzhou, Shandong Province, China.
7. Department of Hepatological Surgery, Dalian Municipal Central Hospital Affiliated of Dalian Medical University, Dalian, Liaoning Province, China.
8. Department of General Surgery, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu Province, China.