Received: 10 March 2019
Accepted: 24 February 2020
First Online: 16 April 2020
: The authors declare that they have no competing interest .
: The present protocol was approved by Research Ethics Committee of Federal University of Rio Grande do Sul, Porto Alegre, Brazil (#68322017.8.0000.5347). All procedures performed in the present study, involving human participants, were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
: For this type of study, formal consent is not required.