1. Department
of Occupational and Environmental Health, School of Public Health,
Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
2. Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, PR China
3. College
of Public Health, University of South China, Hengyang, Hunan 421001, PR China