1. Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
2. Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China
3. Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
4. Key laboratory of Carcinogenesis and Translational Research, Ministry of Education, Gastrointestinal Cancer Center, Peking University Cancer Hospital and Institute, Beijing, China
5. Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
6. Department of Gastrointestinal Surgery & Laboratory of Gastric Cancer, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
7. Department of Gastrointestinal Surgery, the Cancer Hospital of Harbin Medical University, Harbin, China
8. Department of Gastrointestinal Surgery, the First Hospital, Jilin University, Changchun, China
9. Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
10. Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi’an, China
11. Department of Gastrointestinal Surgery, the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
12. Department of Gastrointestinal Oncological Surgery, Fujian Provincial Cancer Hospital, Fuzhou, China
13. Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
14. Department of General Surgery, General Hospital of PLA, Beijing, China
15. Department of Biostatistics, School of Public Health, Southern Medical University, Guangzhou, China