Funding for this research was provided by:
Fundação de Amparo à Ciência e Tecnologia do Estado de Pernambuco (IBPG-0605-1.03/15)
Text and Data Mining valid from 2019-02-04
Received: 11 April 2018
Accepted: 10 January 2019
First Online: 4 February 2019
: The authors declare that they have no competing interests.
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