Received: 13 September 2018
Accepted: 22 May 2019
First Online: 11 June 2019
Ethics approval and consent to participate
: The ethical committee of Faculty of Medicine of University of São Paulo has approved this study. The reference number is: 69661917.1.0000.0065.Consent was obtained from the participants via internet because the research used an online platform.
: Consent was obtained from the participants via online.
: The authors declare that they have no competing interests.