Capital Medical University - School of Public Health, Capital Medical University - Department of Epidemiology and Health Statistics, National Health Commission (China), Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - National Central Cancer Registry, China Medical University, National Health Commission (China), Chinese Academy of Medical Sciences - School of Public Health, Capital Medical University - School of Public Health, Capital Medical University - School of Public Health, Dalian University and Government of the People's Republic of China - National Health Commission (formerly National Health and Family Planning Commission)