1 Chinese Center for Disease Control and Prevention, Beijing 102200, China.
2 Huanggang Provincial Center for Disease Control and Prevention, Huanggang 438000, Hubei, China.
3 Hubei Provincial Center for Disease Control and Prevention, Wuhan 430079, Hubei, China.
4 School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan 430065, Hubei, China;Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan 430065, Hubei, China.