Funding for this research was provided by:
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Received: 28 November 2017
Accepted: 17 September 2018
First Online: 24 September 2018
Ethics approval and consent to participate
: This research has been approved by the Research Ethics Committees of the Universidade Federal do Rio Grande do Sul (protocol CAAE 36949514.8.0000.5347) and the Irmandade da Santa Casa de Misericordia de Porto Alegre (protocol CAAE 45100215.1.0000.5335).
: Not applicable.
: The authors declare that they have no competing interests.
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