Funding for this research was provided by:
International Initiative for Impact Evaluation (TW2.2.06)
National Institutes of Health (P30-AI124414)
National Institute of Mental Health (P30-MH43520)
First Online: 14 August 2018
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: The study procedures were approved by the City University of New York Institutional Review Board, the Kenya Medical Research Institute Ethics Committee, and the University of KwaZulu-Natal Biomedical Research Ethics Committee.
: We used a passive informed consent process in this study as described in the paper in the section titled “Sample, eligibility and consent.”