Funding for this research was provided by:
Ministério da Saúde (LN7901-BR)
Received: 31 August 2017
Accepted: 25 January 2019
First Online: 5 March 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Oswaldo Cruz Foundation and followed the National Health Council (CNS) guidelines, assuring the subjects’ voluntariness, anonymity and possibility of withdrawal at any moment in the study, through the signing of a consent form.
: All data are in aggregated form and no individual nor personal identification of participants are possible.
: The authors declare that they have no competing interests.
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