1 National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, China.
2 School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, China.
3 School of Public Health, Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology Assessment, Fudan University, China. Electronic address: kanh@fudan.edu.cn.
4 National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, China. Electronic address: shixm@chinacdc.cn.