1 Institute for HIV/AIDS and STD Prevention and Control, Beijing Center for Disease Prevention and Control, No.16, Hepingli middle Road, Dongcheng District, Beijing, 100013, People's Republic of China.
2 Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, No.16, Hepingli middle Road, Dongcheng District, Beijing, 100013, People's Republic of China.
3 Beijing office of center for global Health, Beijing Center for Disease Prevention and Control, No.16, Hepingli middle Road, Dongcheng District, Beijing, 100013, People's Republic of China.
4 Institute for HIV/AIDS and STD Prevention and Control, Beijing Center for Disease Prevention and Control, No.16, Hepingli middle Road, Dongcheng District, Beijing, 100013, People's Republic of China. huangch@bjcdc.org.
5 Institute for Infectious Disease and Endemic Disease Control, Beijing Center for Disease Prevention and Control, No.16, Hepingli middle Road, Dongcheng District, Beijing, 100013, People's Republic of China. bjcdcxm@126.com.