Funding for this research was provided by:
Consejería de Educación, Junta de Castilla y León (VA041P17, VA138G18, VA148G18)
Ministerio de Economía y Competitividad (MTM2017-85476-C2-1-P, MTM2014-56022-C2-2-P)
Text and Data Mining valid from 2019-05-28
Received: 21 January 2019
Accepted: 7 May 2019
First Online: 28 May 2019
Ethics approval and consent to participate
: All the data employed in this article were generated through simulations or obtained from already published papers. Data are deemed to be exempt from institutional review board assessment.
: Not applicable.
: The authors declare that they have no competing interests.
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