Funding for this research was provided by:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (457940/2014-0, 311156/2017-7)
Text and Data Mining valid from 2020-01-16
Received: 23 August 2019
Accepted: 8 January 2020
First Online: 16 January 2020
Compliance with ethical standards
: This manuscript has not been published and is not under consideration for publication elsewhere.
: The author declares that there is no conflict of interest.