affiliation not provided to SSRN, affiliation not provided to SSRN, Sichuan University - West China School of Public Health, Sichuan University, Monash University - Department of Epidemiology and Preventive Medicine, Sun Yat-Sen University (SYSU) - Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, University of Maryland - Department of Atmospheric and Oceanic Science, Tibet Center for Disease Control and Prevention, affiliation not provided to SSRN, Kunming Medical University, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Sichuan University - West China School of Public Health and Sichuan University - Department of Epidemiology and Biostatistics