1. Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
2. Fujian Medicine University, Teaching Hospital, The First Hospital of PuTian City, Putian, China
3. Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
4. Department of General Surgery Unit 4, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, Fujian, China
5. Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
6. Department of General Surgery, Jiangsu Province Hospital, Nanjing Medical University, Nanjing, China
7. Department of Gastrointestinal Surgery, Affiliated Hospital of Qinghai University, Qinghai Medical University, Xining, China
8. Department of General Surgery Unit 2, Meizhou People's Hospital of Guangdong, Meizhou, China
9. Department of Gastrointestinal Surgery, Fujian Provincial Hospital, Fuzhou, China
10. Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
11. Department of General Surgery, Longyan First Hospital, Longyan, China
12. Department of General Surgery, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang Medical University, Wulumuqi, China
13. Department of General Surgery, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou University of Traditional Chinese Medicine, Guangzhou, China
14. Department of General Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
15. Department of Gastrointestinal Surgery, West China Hospital of Sichuan University, Sichuan University, Chengdu, China
16. Gastrointestinal Cancer Center, Beijing University Cancer Hospital, Beijing, China
17. Department of Gastrointestinal Surgery, The First Affiliated Hospital of Xiamen University, Xiamen University, Xiamen, China
18. Department of General Surgery, Guangdong Provincial People's Hospital, Guangzhou, China
19. Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi’an, China