1. School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, Hubei 430065, PR China
2. Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, Hubei 430065, PR China
3. Wuhan Tongji Aerospace City Hospital, Wuhan, Hubei 430064, China