Funding for this research was provided by:
Global Affairs Canada (7059904)
Received: 10 October 2018
Accepted: 28 January 2019
First Online: 15 February 2019
Ethics approval and consent to participate
: The Johns Hopkins Bloomberg School of Public Health Institutional Review Board deemed this study not human subjects research on December 28, 2016 (No. 00007617). The Tanzania National Institute for Medical Research granted ethical clearance for the study on March 22, 2017.
: Not applicable.
: The authors declare that they have no competing interests.