Funding for this research was provided by:
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Text and Data Mining valid from 2018-05-16
Received: 13 March 2017
Accepted: 19 April 2018
First Online: 16 May 2018
Ethics approval and consent to participate
: This study was approved by the Human Research Ethics Committee of the Instituto Evandro Chagas under number 13/2009. The participants and their legal guardians (to women < 18 years old) signed a consent form and answered an epidemiological questionnaire.
: The authors declare that they have no competing interests.
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