1. Guangdong Provincial Key Laboratory of Tropical Disease Research, Food Safety and Health Research Center, School of Public Health, Southern Medical University, Guangzhou, PR China;
2. Guangdong Provincial Key Laboratory of Occupational Disease Prevention and Treatment, Department of Toxicology, Guangdong Provincial Hospital for Occupational Disease Prevention and Treatment, Guangzhou, PR China;
3. School of Public Health, Sun Yat-sen University, Guangzhou, PR China;
4. Luoding City Center for Disease Prevention and Control, Luoding, PR China;
5. Department of Environmental and Preventive Medicine, Jichi Medical University School of Medicine, Shimotsuke, Japan;
6. Department of Occupational and Environmental Health, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan;
7. Guangdong Provincial Hospital for Women and Children’s Healthcare, Guangzhou, PR China