1. Guangxi Key Laboratory of AIDS Prevention and Treatment and Guangxi Universities Key Laboratory of Prevention and Control of Highly Prevalent Disease, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
2. Guangxi Collaborative Innovation Center for Biomedicine, Life Sciences Institute, Guangxi Medical University, Nanning, Guangxi, China
3. Guangxi Center for Disease Control and Prevention, Nanning, Guangxi, China
4. The First Affiliated Hospital, Chongqing Medical University, Chongqing, China
5. School of Public Health, Xinjiang Medical University, Xinjiang, China
6. School of Public Health, Chongqing Medical University, Chongqing, China
7. National Center for STD Control, Chinese Center for Disease Control and Prevention, Nanjing, China