1. Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
2. Youth Public Health Service Center, Luyang District, Hefei, China
3. Chengdu Tongle Health Consulting Service
Center, Chengdu, Sichuan Province, China
4. Wuhan Center for Disease Control and Prevention, Wuhan, Hubei
Province, China
5. Suzhou Center for Disease Control and Prevention, Suzhou City, Jiangsu Province, China
6. Chengdu Center for Disease Control and Prevention, Chengdu City, Sichuan Province, China
7. Department of
Maternal, Child & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, China
8. School of
Public Health, Brown University, Providence, RI 02912, USA
9. School of Public Health, The State University of New
Jersey, Piscataway, NJ 08901, USA
10. Fay W. Boozman College of Public Health, University of Arkansas for Medical
Sciences, Little Rock, AR 72204, USA
11. Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA