1. Post-Doctoral Mobile Stations for Basic Medicine; University of South China; Hengyang 421001 People's Republic of China
2. Ministry of Education Key Laboratory of Environment and Health; School of Public Health, Tongji Medical College, Huazhong University of Science and Technology; Wuhan 430030 People's Republic of China
3. Institute of Pathogenic Biology, Medical College, University of South China; Hengyang 421001 People's Republic of China