Funding for this research was provided by:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (309453/2019-4)
Fundação de Amparo à Pesquisa do Estado de Minas Gerais (PROCESS N.: CDS - PPM-00611-17)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Received: 19 July 2018
Accepted: 9 November 2020
First Online: 18 November 2020
Ethics approval and consent to participate
: This study was approved by the ethics review committee from the Universidade Federal de Minas Gerais (Registration Number: CA: 20466614.0.0000.5149). Parents and children provided informed written consent. This study followed the ethical principles stated by the Declaration of Helsinki for research involving human subjects.
: Not applicable.
: The authors declare that they have no competing interests.