Funding for this research was provided by:
Pontificia Universidad Católica del Ecuador (M13398)
Wellcome Trust (109949/Z/15/Z)
Fogarty International Center (D43TW008261)
Received: 31 January 2019
Accepted: 8 August 2019
First Online: 17 August 2019
Ethics approval and consent to participate
: No institutional review board protocol approval was needed for this study. All data were extracted from national public domain databases.
: Not applicable.
: The authors declare that they have no competing interests.