1 Department of Epidemiology, School of Public Health, The Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, 200032, China.
2 Taizhou City Center for Disease Control and Prevention, Taizhou City of Zhejiang Province, Taizhou, China.
3 Department of Epidemiology, School of Public Health, The Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, 200032, China. nhe@fudan.edu.cn.
4 Key Laboratory of Health Technology Assessment of National Commission of Health, Fudan University, Shanghai, China. nhe@fudan.edu.cn.