Funding for this research was provided by:
Ministerio de Ciencia, Innovación y Universidades (RTI2018-094212-B-I00)
Universidad Internacional de la Rioja (Own Research Plan 4 [2017-2020])
Text and Data Mining valid from 2019-11-09
Accepted: 28 October 2019
First Online: 9 November 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: The study obtained the approval of legal guardians through a procedure with passive consent.