Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1089413)
Received: 26 June 2019
Accepted: 21 November 2019
First Online: 5 December 2019
Ethics approval and consent to participate
: Institutional Review Board approval for this study was obtained from the University of California San Francisco, the Ministry of Public Health and Population of Haiti, and the Ministry of Public Health and Social Assistance of the Dominican Republic. Written consent by signature or fingerprint was provided from all consenting participants.
: Not applicable.
: The authors declare that they have no competing interests.