Funding for this research was provided by:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Finance Code 001)
Text and Data Mining valid from 2019-11-28
Received: 3 October 2019
Accepted: 18 November 2019
First Online: 28 November 2019
Compliance with Ethical Standards
: The authors state that there is no conflict of interest to disclose.