Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1127467, OPP1107312)
Received: 3 May 2017
Accepted: 8 September 2017
First Online: 22 September 2017
Ethics approval and consent to participate
: The proposal and study materials for the two projects that provide data for this manuscript were reviewed and approved by the UCSF Committee for Human Subjects research (IRB numbers 15-18,458 and 15-18,008) and the Kenya Medical Research Institute Scientific and Ethics Review Unit (protocol IDs KEMRI/SERU/CCR/039/3286 and non-KEMRI 526). All participants provided written informed consent prior to participation.
: Not applicable.
: The authors declare that they have no competing interests.
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