Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado de Minas Gerais (APQ-02372-17)
Text and Data Mining valid from 2019-04-15
Received: 26 July 2018
Accepted: 14 March 2019
First Online: 15 April 2019
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.