1. Department of Cancer Epidemiology National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
2. Center for Cancer Prevention Research, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine University of Electronic Science and Technology of China Chengdu China
3. School of Population Medicine and Public Health Chinese Academy of Medical Sciences and Peking Union Medical College Beijing China
4. Henan Cancer Hospital Department of Cancer Epidemiology Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital Zhengzhou China
5. Department of Public Health and Preventive Medicine Changzhi Medical College Changzhi Shanxi China
6. Department of Epidemiology and Biostatistics, West China School of Public Health and West China Fourth Hospital Sichuan University Chengdu Sichuan China