1. Department of Epidemiology and Biostatistics, School of Health Sciences, Wuhan University, Wuhan 430071, Hubei Province, China
2. China Animal Health and Epidemiology Center, Qingdao 266032, Shandong Province, China
3. College of Journalism and Communication, Guangxi University, Nanning 530004, Guangxi Province, China
4. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, Hubei Province, China