Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado de Minas Gerais
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Text and Data Mining valid from 2020-02-22
Received: 14 February 2019
Accepted: 6 February 2020
First Online: 22 February 2020
Ethics approval and consent to participate
: This study is based on secondary data, and all presented information is ofpublic domain. None of the variables or data used in this study allowed theidentification of individuals. Thus, approval of the study by an Ethical ReviewBoard was not necessary. Ethnicity data is based on the IBGE demographic census, as shown on the website <ExternalRef removed brasil/populacao/18319-cor-ou-raca.html>.
: Not applicable.
: The authors declare that they have no competing interests.