| Affiliation: | 1. China-Australia Joint Research Center for Infectious Diseases, School of Public Health, Xi''an Jiaotong University Health Science Center, Xi''an, Shaanxi 710061, China;2. Key Laboratory for Disease Prevention and Control and Health Promotion of Shaanxi Province, Xi''an, Shaanxi, China;3. Melbourne Sexual Health Centre, Alfred Health, Melbourne, VIC, Australia;4. Central Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, VIC, Australia;5. Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China |
