Funding for this research was provided by:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (001)
Text and Data Mining valid from 2019-09-05
Received: 27 February 2019
Accepted: 19 August 2019
First Online: 5 September 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Research Committee of the Federal University of Health Science of Porto Alegre (protocol n.: 1.333.131).
: Not applicable.
: The authors declare that they have no competing interests.