Key Laboratory of AIDS Immunology of National Health and Family Planning Commission Department of Laboratory Medicine The First Affiliated Hospital China Medical University Shenyang ChinaCollaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Hangzhou China;
Key Laboratory of AIDS Immunology of National Health and Family Planning Commission Department of Laboratory Medicine The First Affiliated Hospital China Medical University Shenyang ChinaCollaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Hangzhou China;
Key Laboratory of AIDS Immunology of National Health and Family Planning Commission Department of Laboratory Medicine The First Affiliated Hospital China Medical University Shenyang ChinaCollaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Hangzhou China;
Jiangsu Provincial Centers for Disease Control and Prevention Nanjing China;
He’nan Provincial Centers for Disease Control and Prevention Zhengzhou China;
Yunnan Provincial Centers for Disease Control and Prevention Kunming China;
Shanghai Municipal Centers for Disease Control and Prevention Shanghai China;
Hu’nan Provincial Centers for Disease Control and Prevention Changsha China;
Shandong Provincial Centers for Disease Control and Prevention Jinan China;
University of North Carolina Project-China Guangzhou China;
Key Laboratory of AIDS Immunology of National Health and Family Planning Commission Department of Laboratory Medicine The First Affiliated Hospital China Medical University Shenyang ChinaCollaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Hangzhou China;
Key Laboratory of AIDS Immunology of National Health and Family Planning Commission Department of Laboratory Medicine The First Affiliated Hospital China Medical University Shenyang ChinaCollaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Hangzhou China;
Key Laboratory of AIDS Immunology of National Health and Family Planning Commission Department of Laboratory Medicine The First Affiliated Hospital China Medical University Shenyang ChinaCollaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Hangzhou China;
Sexually transmitted diseases(STDs); Men who have sex with men(MSM); Treatment-seeking behaviour; HIV; China;