Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (PTDC/MHC-CED/1680/2014 and UID/CED/04853/2016)
Text and Data Mining valid from 2019-04-11
Received: 18 July 2018
Accepted: 25 March 2019
First Online: 11 April 2019
: The authors declare that they have no competing interests.
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