Funding for this research was provided by:
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (88881.132774/2016-01)
Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (IBPG- 0892-1.03/13)
Text and Data Mining valid from 2019-02-26
Received: 21 April 2018
Accepted: 11 November 2018
First Online: 26 February 2019
: The authors declare that they have no competing interests.
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