Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado de São Paulo (2015/12628-0, #2016/20371-1)
Text and Data Mining valid from 2018-12-05
Received: 25 September 2018
Accepted: 29 November 2018
First Online: 5 December 2018
Compliance with ethical standards
: All authors declare no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The present study was approved by the local ethics committee.