Funding for this research was provided by:
Ministerio de Economía y Competitividad (MTM2017-88804-P, MTM2014-54151-P)
Agencia Desarrollo Económico de La Rioja (2017-I-IDD-00018)
Text and Data Mining valid from 2019-02-12
First Online: 12 February 2019
Compliance with ethical standards
: All 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.