[Gao, Y.] Shanghai Centennial Sci Ltd, Shanghai, Peoples R China; [Chen, L.; Fang, H.; Xu, D.] Shanghai Minhang Ctr Dis Control & Prevent, Shanghai, Peoples R China; [Xuan, J.] Sun Yat Sen Univ, Guangzhou, Guangdong, Peoples R China; [Liu, B.] Fudan Univ, Sch Publ Hlth, Dept Hlth Econ, Shanghai, Peoples R China