Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (UID/QUI/0686/2016, REDE/1517/RMN/2005, UID/QUI/00686/2013, SFRH/BD/86408/2012)
Text and Data Mining valid from 2018-03-12
Received: 4 October 2017
Accepted: 28 February 2018
First Online: 12 March 2018
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.