Funding for this research was provided by:
National Health and Family Planning Commission of the People's Republic of China (2012ZX10001-007)
Fogarty International Center (5U2RTW006918)
Received: 2 May 2018
Accepted: 30 May 2019
First Online: 14 June 2019
Ethics approval and consent to participate
: This study was approved by the Institute of Review Board of the National Center for AIDS/STD Control and Prevention of the Chinese Center for Disease Control and Prevention (Reference number for the ethical approval: X130419276). For each, participant written informed consent was obtained by the local outreach worker in the dialect of Chinese that was most comfortable for the participant (i.e. Mandarin, Guangxi dialect, or Hunan dialect). Participants were informed that participation in the study was completely voluntary and they had autonomy to withdraw from the study at any time. As compensation for participation, each FSW enrolled in the study received 50 RMB (~ 8.2 USD) at the time of the baseline encounter. No personal identified individual information of participant was involved in the study—we extracted anonymized data from the record.
: Not applicable.
: The authors declare that they have no competing interests.