Funding for this research was provided by:
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Text and Data Mining valid from 2019-04-24
Accepted: 25 March 2019
First Online: 24 April 2019
Compliance with ethical statement
: The authors declare that they have no conflict of interest.
: Not applicable to this study, did not work with humans or animals.
: Not applicable.