Funding for this research was provided by:
Department of Science and Technology of the Secretary of Science, Technology and Strategic Inputs of the Brazilian Ministry of Health
Health Sector Fund (CT-Saúde) of the Brazilian Ministry of Science, Technology and Innovation ((FINEP Protocol: 01090421 and CNPq 565037/2010-2 and 405.009/2012-7).)
Fellow of CNPq (141155/2014-0)
Received: 11 April 2017
Accepted: 26 January 2018
First Online: 7 February 2018
Ethics approval and consent to participate
: The study was approved by the Research Ethics Committees (CEP) of the Federal University of Pernambuco (Number 05185212.2.2002.5208) and the Aggeu Magalhães Research Center (CpqAM/Fiocruz) (Number 31446314.6.1001.5190). The adolescents who participated in this study agreed in writing to participate and their legal guardians signed an informed consent form.
: Not applicable.
: The authors declare that they have no competing interests.
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