Funding for this research was provided by:
Eusko Jaurlaritza (DEUI-IT-793-13, DEUI-IT-783-13)
Spanish Ministry of Economy and Competitiveness and the European Fund of Regional Development (ECO2015-64467-R, ECO2016-76884-P)
Text and Data Mining valid from 2019-04-04
Received: 17 April 2018
Accepted: 25 March 2019
First Online: 4 April 2019
Compliance with ethical standards
: Both 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.