Morales-Hidalgo, Paula https://orcid.org/0000-0001-5434-7163
Roigé-Castellví, Joana
Hernández-Martínez, Carmen
Voltas, Núria
Canals, Josefa
Funding for this research was provided by:
European Regional Development Fund (PSI2015-64837-P)
Ministerio de Educación, Cultura y Deporte (FPU2013-01245)
Departament d’Universitats, Recerca i Societat de la Informació (2016FI-01144)
Article History
First Online: 25 April 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: The study protocol was approved by the Ethics Committee at the Sant Joan University Hospital (13-10-31/10proj5). Before beginning the study, we obtained permission from the Catalan Department of Education. All the schools boards contacted agreed to participate in the study. Parents received a letter informing them about the study and were asked for their written informed consent.