1. School of Public Health, Chongqing Medical University, Chongqing, China
2. School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
3. Department of Epidemiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
4. Department of Primary Care and Population Health, University of Nicosia Medical School, Nicosia, Cyprus