Funding for this research was provided by:
United States Centers for Disease Control and Prevention (GH000515)
Text and Data Mining valid from 2020-03-12
Received: 3 May 2019
Accepted: 26 February 2020
First Online: 12 March 2020
Ethics approval and consent to participate
: All participants completed written informed consent prior to enrollment. This study was conducted according to the principles expressed in the Declaration of Helsinki. Human subject research approval was obtained from the University of the Witwatersrand Human Research Ethics Committee (M120492), the South African Department of Correctional Services Research Review Committee, the Johns Hopkins Medicine Institutional Review Board (NA_83335), and the CDC Institutional Review Board.
: Not applicable.
: The authors declare that they have no competing interests.