Using a Geosocial Networking App to Investigate New HIV Infections and Related Risk Factors Among Student and Nonstudent Men Who Have Sex With Men in Chengdu, China: Open Cohort Study

Zhen Dai   ¹ , MSc ;   Guodong Mi   ² , MD, PhD ;   Fei Yu   ² , MSW ;   Guodong Chen   ³ , MSc ;   Xiaodong Wang   ⁴ , BSc ;   Qinying He   ¹ , BMed

¹ Department of Sexually Transmitted Disease, AIDS Prevention and Control, Chengdu Center for Disease Control and Prevention, Chengdu, China

² BlueCity Holdings, Beijing, China

³ Department of Anthropology, University of Copenhagen, Copenhagen, Denmark

⁴ Chengdu Tongle Social Work Service Center, Chengdu, China