1. Institute of Child and Adolescent Health, School of Public Health, Peking University, Beijing 100191, China
2. Non-Communicable Chronic Disease Control and Prevention Institute, Jiangsu Provincial Center for Disease Control and Prevention, Jiangsu 210009, China
3. School of Energy and Power, Jiangsu University of Science and Technology, Jiangsu 212100, China
4. Department of Occupational and Environmental Health Sciences, School of Public Health, Peking University, Beijing 100191, China
5. Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China