1. College of Public Health, Zhengzhou University, Zhengzhou450001, Henan, China
2. Department of Chemistry and Biochemistry, St Mary’s University, San Antonio78228, Texas, United States
3. Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang421001, Hunan, China
4. Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha410008, Hunan, China