1. National Cancer CenterNational Clinical Research Center for Cancer, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
2. Jiangsu Provincial Center for Disease Control and Prevention Nanjing China
3. Anhui Provincial Center for Disease Control and Prevention Hefei China
4. Shandong Cancer Hospital and Institute Shandong First Medical University and Shandong Academy of Medical Sciences Jinan China
5. Department of Cancer Epidemiology Henan Office for Cancer Control and ResearchThe Affiliated Cancer Hospital of Zhengzhou UniversityHenan Cancer Hospital Zhengzhou China
6. Henan Provincial Center for Disease Control and Prevention Zhengzhou China