Funding for this research was provided by:
Ministerio de Ciencia e Innovación (AGL 2010-18279)
Spanish Ministry of Economy and Competitiveness (AGL 2013- 48980-R)
Text and Data Mining valid from 2018-08-10
Accepted: 17 July 2018
First Online: 10 August 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.