Funding for this research was provided by:
Global Affairs Canada (7059904)
Received: 29 April 2019
Accepted: 4 September 2019
First Online: 24 September 2019
Ethics approval and consent to participate
: Informed written consent was obtained from all participants. Ethical approval was obtained by the Institutional Review Board of Johns Hopkins Bloomberg School of Public Health and from the Institutional Committee of Bioethics of INS.
: Not applicable.
: The authors declare that they have no competing interests.