Funding for this research was provided by:
Brazilian Ministry of Health
Fogarty International Center (K01 TW010000-01A1)
Received: 26 July 2016
Accepted: 22 October 2017
First Online: 30 October 2017
Ethics approval and consent to participate
: All data used in this study were from secondary databases. Only previously collected data was used in this study, and no participants were involved. We only use aggregated de-identified data for Brazilian states and municipalities. No informed consent was necessary due to the exclusive use of secondary databases to perform this study.
: Not applicable.
: The authors declare that they have no competing interests.
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