Funding for this research was provided by:
Fundação da Universidade Federal do Paraná
Text and Data Mining valid from 2018-06-29
Received: 16 April 2018
Accepted: 20 June 2018
First Online: 29 June 2018
Compliance with ethical standards
: This study was performed according to Brazilian Federal laws and was approved by the Human Research Ethics Committee of the Federal University of Parana.
: The authors declare that they have no conflict of interest.