1. Department of Epidemiology and Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
2. Key Laboratory of Infectious Diseases, School of Public Health, Nanjing Medical University, Nanjing, China
3. Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
4. Department of Basic and Community Nursing, School of Nursing, Nanjing Medical University, Nanjing, China
5. Faculty of Life Science and Technology, Kunming University of Science and Technology, Chenggong District, Kunming, Yunnan, China