Funding for this research was provided by:
Ministerio de Economía y Competitividad (AGL2010-17042)
Universidad de Alcalá (UAHGC2014-002)
Text and Data Mining valid from 2018-12-01
Received: 13 September 2018
Accepted: 12 December 2018
First Online: 29 December 2018
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: Not applicable.
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