Chinese Center for Disease Control and Prevention (China CDC) - Institute for STI and HIV Control and Prevention, University of North Carolina Project-China, Chinese Center for Disease Control and Prevention (China CDC) - Institute for STI and HIV Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC) - Institute for STI and HIV Control and Prevention, Nanjing Medical University - School of Public HealthUniversity of North Carolina Project-China, Chinese Center for Disease Control and Prevention (China CDC) - Institute for STI and HIV Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC) - Institute for STI and HIV Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC) - Institute for STI and HIV Control and Prevention and Jiangsu Provincial Center for Disease Control and Prevention - Institute for STI and HIV Control and Prevention

Nanjing Medical University, Chinese Center for Disease Control and Prevention (China CDC) - Jiangsu Provincial Center for Disease Control and Prevention, Nanjing Medical University, Chinese Center for Disease Control and Prevention (China CDC) - Jiangsu Provincial Center for Disease Control and Prevention, Nanjing Medical University, Xi'an Jiaotong University (XJTU) - China-Australia Joint Research Center for Infectious Diseases, Jiangsu Provincial Center for Disease Control and Prevention - Institute for STI and HIV Control and Prevention and Nanjing Medical University - Department of Epidemiology and Biostatistics

Capital Medical University - Center for Infectious Diseases, Tianjin Centers for Disease Control and Prevention, Jiangsu Provincial Center for Disease Control and Prevention - Institute for STI and HIV Control and Prevention, Guangxi Center for Disease Prevention and Control, Guangzhou Medical University - Guangzhou Eighth People's Hospital, Changzhi Medical College - Department of Preventive Medicine, The Second Hospital of Huhhot, Shenzhen Center for Disease Control and Prevention, Shanghai Jiao Tong University (SJTU) - SJTU-Yale Joint Center for Biostatistics and Data Sciences, University of Tennessee, Knoxville - Department of Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC) - Peking Union Medical College Hospital, AIDS Healthcare Foundation (AHF) China, Jiangsu Provincial Center for Disease Control and Prevention, The Chinese University of Hong Kong (CUHK) - JC School of Public Health and Primary Care, University of North Carolina Project-China, The Chinese University of Hong Kong (CUHK) - Centre for Health Behaviours Research and Changzhi Medical College - Department of Preventive Medicine