1. Department of Gastrointestinal Oncology Key Laboratory of Cancinogenesis and Translational Research (Ministry of Education) Peking University Cancer Hospital & Institute Beijing 100142 P. R. China
2. Department of Gastrointestinal Oncology Affiliated Zhongshan Hospital of Fudan University Shanghai 200032 P. R. China
3. Department of Oncology Nanjing Drum Tower Hospital the Affiliated Hospital of Nanjing University Medical School Nanjing Jiangsu 210008 P. R. China
4. Department of Oncology Weihai Municipal Hospital Weihai Shandong 264299 P. R. China
5. Department of Oncology Anhui Provincial Cancer Hospital Hefei Anhui 230031 P. R. China
6. Department of Oncology The First Affiliated Hospital of Xinxiang Medical College Xinxiang Henan 453100 P. R. China
7. Department of Oncology Subei People's Hospital Yangzhou Jiangsu 225009 P. R. China
8. Department of Abdominal Oncology Fujian Provincial Cancer Hospital Fuzhou Fujian 350014 P. R. China
9. Department of Gastrointestinal Oncology Henan Cancer Hospital Zhengzhou Henan 450003 P. R. China
10. Department of Oncology Linyi Cancer Hospital Linyi Shandong 276002 P. R. China
11. Department of Oncology The First Affiliated Hospital of Anhui Medical University Hefei Anhui 230022 P. R. China
12. Department of Oncology Jiangsu Cancer Hospital Nanjing Jiangsu 210009 P. R. China
13. Department of Oncology The Fifth Medical Center of PLA General Hospital Beijing 100039 P. R. China
14. Department of Oncology The First Affiliated Hospital of Zhengzhou Zhengzhou Henan 450099 P. R. China
15. Department of Oncology Sun Yat‐sen University Cancer Center Guangzhou Guangdong 510060 P. R. China
16. Department of Oncology Yantai Yuhuangding Hospital Yantai Shandong 264099 P. R. China
17. Department of Oncology The First Affiliated Hospital of Xi'an Jiaotong University Xi'an Shanxi 710061 P. R. China
18. Department of Oncology Jinan Central Hospital Jinan Shandong 250013 P. R. China
19. Department of Oncology Weifang People's Hospital Weifang Shandong 261041 P. R. China
20. Department of Oncology Peking Union Medical College Hospital Beijing 100005 P. R. China
21. Department of Oncology Xuzhou Central Hospital Xuzhou Jiangsu 221009 P. R. China
22. Department of Oncology The First Affiliated Hospital of Hainan Hospital Haikou Hainan 570102 P. R. China
23. Department of Abdominal Oncology Zhejiang Cancer Hospital Hangzhou Zhejiang 310005 P. R. China
24. Department of Oncology Hubei Cancer Hospital Wuhan Hubei 430079 P. R. China
25. Department of Oncology The First Affiliated Hospital of Zhejiang University Hangzhou Zhejiang 310003 P. R. China
26. Department of Oncology The Affiliated Hospital of Xuzhou Medical University Xuzhou Jiangsu 221004 P. R. China
27. Department of Oncology Jiangsu Province Hospital Nanjing Jiangsu 210029 P. R. China
28. Department of Oncology Guangdong Provincial People's Hospital Guangzhou Guangdong 510080 P. R. China
29. Department of Oncology Chinese PLA General Hospital Beijing 100036 P. R. China
30. Department of Gastrointestinal Oncology The Fourth Hospital of Hebei Medical University Shijiazhuang Hebei 050011 P. R. China
31. Department of Gastrointestinal Oncology Tianjin Medical University Cancer Institute and Hospital Tianjin 300181 P. R. China
32. RemeGen, Ltd. Beijing 100020 P. R. China