Funding for this research was provided by:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Text and Data Mining valid from 2019-02-11
Received: 7 October 2018
Accepted: 6 January 2019
First Online: 11 February 2019
Ethics approval and consent to participate
: This study was conducted in accordance with the tenets of the Declaration of Helsinki, and all procedures involving human subjects were approved by the ethics committee of the Pontifical Catholic University of Rio Grande do Sul/UBEA (ethical approval letter OF.CEP-772/10; research protocol CEP 10/05074).
: Written informed consent was obtained from all study participants.
: Diego Fernandes Triches, Fernando Rizzo Alonso, Luis André Mezzomo, Danilo Renato Schneider, Eduardo Aydos Villarinho, Maria Ivete Rockenbach, Eduardo Rolim Teixeira, and Rosemary Sadami Shinkai declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.