Funding for this research was provided by:
Ministerio de EconomÃa y Competitividad (PSI2015-68426-R)
Eusko Jaurlaritza (IT982-16)
Eusko Jaurlaritza (PI_2016_1_0023)
Eusko Jaurlaritza (IT982-16)
Article History
First Online: 24 September 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study were in accordance with the ethical standards of the institutional and/or national research committee of the University of Deusto (Spain) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This paper does not include any studies with animals.
: Informed consent was obtained from all individual participants included in the study and their parents.