Text and Data Mining valid from 2019-01-23
Received: 2 October 2018
Accepted: 29 December 2018
First Online: 23 January 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest relating to the publication of this manuscript.
: All procedures were approved by institutional ethic review of the Federal University of Santa Catarina, Santa Catarina, Brazil
: All subjects provided written informed consent.