Text and Data Mining valid from 2019-02-28
Received: 19 April 2018
Accepted: 6 February 2019
First Online: 28 February 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Universidade Federal do Rio Grande do Sul – UFRGS (project number 1.899.368) in accordance with the regulations of Resolution 466/12 of the National Health Council / Brazil.
: Written informed consent was obtained from all participants of this study for the publication of this information.
: The authors declare that they have no competing interests.
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