Funding for this research was provided by:
Ministerio de Economía, Industria y Competitividad, Gobierno de España (ECO2015-70331-C2-2-R, ECO2015-65701-P, ECO2015-66593-P)
Fundação para a Ciência e a Tecnologia (UID/GES/00315/2013)
Text and Data Mining valid from 2019-03-15
Received: 29 October 2018
Accepted: 25 February 2019
First Online: 15 March 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: We declare no ethical issues or issues needing informed consent.