1. Department of Health Education, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
2. School of Public Health, Nanchang University, Nanchang 330006, China
3. Jiangxi Province Key Laboratory of Preventive Medicine, Nanchang 330006, China
4. Department of Integrated Services, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China