1. Department of Cancer Epidemiology, Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College
2. Department of Pathology, Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College
3. Department of Gastroenterology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences
4. Department of Abdominal Surgery, Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College
5. Department of Radiology, Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College
6. Department of Epidemiology, Dalian Medical University
7. Hebei Cancer Registry, the Fourth hospital of Hebei medical university
8. Department of Nutrition, Chongqing Cancer Hospital & Institute & Cancer Center
9. Department of Cancer Epidemiology, Henan Cancer Hospital/Institute
10. Department of Cancer Prevention, Sun Yat-sen University Cancer Center
11. Division of Biological Sciences, the University of Chicago
12. Department of Medical Oncology, Cancer Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College