1. Department of Colorectal Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Bejing, China
2. Department of Coloproctology and Pelvic Diseases, Humanitas Gavazzeni, Bergamo, Italy
3. Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, China
4. Department of Surgery, China Medical University Hospital, Taichung, Taiwan, China
5. Department of Abdominal Surgery, Fujian Medical University Cancer Hospital, Fuzhou, China
6. Department of Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
7. Department of Surgery, Hospital de Braga, Braga, Portugal
8. Colorectal Surgery Department, Sechenov First Moscow State Medical University, Moscow, Russia
9. Universidad Central de Venezuela, Centro Medico Loira, Caracas, Venezuela
10. Department of General Surgery, Shandong University Qilu Hospital, Jinan, China
11. Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, China
12. Department of Gastrointestinal Surgery, Inonu University, Malatya, Turkey
13. Department of Surgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, South Korea
14. Department of Colorectal Surgery, Portsmouth Hospitals NHS Trust, Queen Alexandra Hospital, Portsmouth, UK
15. Division of Colorectal Surgery, Taipei Medical University Hospital, Taipei, Taiwan, China
16. Department of Surgery, Nagaka Chuo General Hospital, Nagaoka City, Japan
17. Innovation Unit / Colorectal Cancer, Osaka Medical College Hospital Cancer Center, Osaka, Japan
18. Department of GI Surgical Oncology, Tata Memorial Hospital, Mumbai, India
19. Department of Colorectal Surgery, Cairo University, Cairo, Egypt
20. Department of Anorectal Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou, China
21. Department of Gastric and Colorectal Surgery, Jilin University First Hospital, Changchun, China
22. Division of Surgical Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
23. Department of Colorectal Cancer Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
24. Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
25. Department of Gastrointestinal Surgery, Hubei Provincial Cancer Hospital, Wuhan, China
26. Department of General Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
27. Department of Surgery, People's Hospital of Linzi District, Affiliated to Binzhou Medical College, Zibo, China
28. Department of Surgical Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
29. Department of Surgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, South Korea
30. Clinic of Colorectal and Minimally Invasive Surgery, Sechenov First Moscow State Medical University, Moscow, Russia
31. Department of Gastrointestinal Surgery, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China