Received: 27 August 2018
Accepted: 21 May 2019
First Online: 13 June 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the Universidade Federal de Minas Gerais (CAAE process 48120614.3.0000.5149). The subjects read and signed the Informed Consent Form before the interview began and had their identity preserved in result presentation.
: Not applicable
: The authors declare that they have no competing interests.