Funding for this research was provided by:
Bill and Melinda Gates Foundation
Received: 30 August 2016
Accepted: 4 August 2017
First Online: 16 August 2017
Ethics approval and consent to participate
: Ethical approval for this study was obtained from the University of Washington Human Subjects Division as well as institutional review boards in Kenya (Kenya Medical Research Institute Ethics Review Committee) and Uganda (Makerere University School of Medicine Research Ethics Committee).
: Not applicable.
: The authors declare that they have no competing interests.
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