1. Shiyan Institute of Preventive Medicine and Health Care, Baoan District, Shenzhen City, People’s Republic of China
2. Department of Environmental Health, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, People’s Republic of China
3. Department of Environmental Health, Center for Disease Control and Prevention of Shenzhen City, Shenzhen, People’s Republic of China
4. State Environmental Protection Key Laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, People’s Republic of China