Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (SFRH/BPD/92978/2013)
European Regional Development Fund (PT) and FCT funds (UID/Multi/04423/2013, PTDC/AAG-GLO/6887/2014)
Text and Data Mining valid from 2018-05-03
Received: 13 February 2017
Accepted: 4 April 2018
First Online: 3 May 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
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