Funding for this research was provided by:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (88881.132103/2016-01)
Received: 28 September 2019
Accepted: 19 January 2021
First Online: 4 February 2021
Ethics approval and consent to participate
: All informants provided their informed consent, and the study was approved by the Faculdade de Medicina da Universidade de São Paulo ethical committee, CAAE 54699716.0.0000.0065.
: Not applicable.
: The authors declare that they have no competing interests.