1. Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, China (R.X., Y.L.).
2. School of Public Health, Shenzhen University Medical School, Shenzhen University, Shenzhen, Guangdong, China (S.H.).
3. Department of Atmospheric and Oceanic Science, Earth System Science Interdisciplinary Center, University of Maryland, College Park (J.W.).
4. Institute of Environment and Health, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, China (H.S.).