Peking University - Department of Epidemiology and Biostatistics, Peking University - Department of Epidemiology and Biostatistics, Peking University - Department of Epidemiology and Biostatistics, Huazhong University of Science and Technology - Key Laboratory of Environmental Health, Peking University, Peking University, Peking University, Peking University, Peking University - Department of Epidemiology and Biostatistics, Peking University - Department of Epidemiology and Biostatistics, Peking University - Department of Epidemiology and Biostatistics, affiliation not provided to SSRN, Peking University, Peking University - Department of Epidemiology and Biostatistics, Peking University, Fujian Provincial Center for Disease Control and Prevention, Peking University - Department of Epidemiology and Biostatistics, Peking University - Department of Epidemiology and Biostatistics and Peking University - Department of Epidemiology and Biostatistics