Funding for this research was provided by:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Undergraduate Research Program (None)
Received: 7 November 2019
Accepted: 12 July 2020
First Online: 22 July 2020
Ethics approval and consent to participate
: The internal review board of the <i>Instituto de Medicina Integral Professor Fernando Figueira</i> (IMIP) approved the study protocol under reference CAEE: 80877817.6.0000.5201. All parents/guardians of the participating children signed an informed consent form.
: Not applicable.
: The authors declare that they have no competing interests.