Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado de São Paulo (2017/06444-9)
Text and Data Mining valid from 2018-11-15
Received: 25 September 2018
Accepted: 8 November 2018
First Online: 15 November 2018
Compliance with ethical standards
: The authors declare that there are no conflicts of interest.