Shi, Lingen
Tang, Weiming
Hu, Haiyang
Qiu, Tao
Marley, Gifty
Liu, Xiaoyan
Chen, Yuheng
Chen, Yunting
Fu, Gengfeng
Article History
Received: 24 December 2020
Accepted: 26 July 2021
First Online: 7 August 2021
Declarations
:
: Participants provided written informed consent prior to the interview and blood collection. Information on clients’ personal identifying information such as name, ID number, phone number, and home address were eliminated prior to data analysis. The study process and contents were reviewed and approved by the Institutional Review Board of the National Center for AIDS/STD Control and Prevention (NCAIDS) and Center for Disease Control and Prevention (CDC) in China. The study was carried out in accordance with relevant guidelines.
: Not applicable.
: The authors declare that they have no competing interests.