[Ni, Z. L.; Liu, B.; Wang, Y.; Tan, X. D.] Wuhan Univ, Sch Publ Hlth, Wuhan 430071, Hubei, Peoples R China.
[Zhou, C.] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Epidemiol, Baltimore, MD USA.
[Peng, J. S.; Zhou, W.] Wuhan Ctr Dis Control & Prevent, Wuhan, Hubei, Peoples R China.
[Ren, Y. S.] Wuhan Univ, Inst Basic Med Sci, Wuhan, Hubei, Peoples R China.
[Yang, F.] Hubei Univ Chinese Med, Dept Nursing, Wuhan, Hubei, Peoples R China.