1. Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
2. Key Laboratory of Ministry of Education of Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
3. Department of Gastrointestinal Surgery, West District, First Affiliated Hospital of the University of Science and Technology of China, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
4. Department of Gastrointestinal surgery, Affiliated Hospital of Qingdao University, Qingdao, China
5. Department of Pancreatic and Gastric Surgery, National Cancer Center, National Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
6. Department of gastrointestinal surgery, the First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, China
7. Department of General Surgery, Huashan Hospital, Fudan University, Shanghai, China
8. Department of Gastrointestinal Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, China
9. Department of Gastrointestinal Surgery, Yantai Yuhuangding Hospital, Yantai, China
10. Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
11. Department of Gastrointestinal Surgery, Gastrointestinal Surgery Research Institute, Affiliated Hospital of Putian University, Putian, China
12. Department of Gastrointestinal Surgery, Fujian Medicine University Teaching Hospital, First Hospital of Putian, Putian, China
13. Department of General Surgery, Henan Cancer Hospital, Zhengzhou, China
14. Department of Gastrointestinal Surgery, Provincial Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou, China
15. Department of Gastrointestinal Surgery, Second People’s Hospital of Liaocheng, Liaocheng, China
16. Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
17. Department of General Surgery, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
18. Department of General Surgery, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
19. Department of Gastrointestinal Surgery, Quanzhou First Hospital Affiliated to Fujian Medical University, Quanzhou, China
20. Department of Gastroenterology Surgery, First Affiliated Hospital of Soochow University, Suzhou, China
21. Department of Gastrointestinal Surgery, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
22. Department of General Surgery, Zhangzhou Affiliated Hospital of Fujian Medical University, Zhangzhou, China
23. Department of Gastrointestinal Surgery, Meizhou People’s Hospital, Meizhou, China
24. Department of Gastrointestinal Surgery, Second Affiliated Hospital, Nanchang University, Nanchang, China