Nika, Thomaitsa http://orcid.org/0000-0003-1489-8029
Stabouli, Stella
Kollios, Konstantinos
Papadopoulou-Legbelou, Kyriaki
Printza, Nikoleta
Antza, Christina
Papachristou, Fotios
Kotsis, Vasilios
Article History
Received: 12 October 2018
Revised: 26 December 2018
Accepted: 7 January 2019
First Online: 21 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures in the study werein accordance with the ethical standards of the Greek Ministry of National Education, the National Educational Institute and the Ethics Committee of Aristotle University of Thessaloniki, which approved the study protocol (65104/Γ7/15–05–2013).
: Informed consent was obtained from all individual participants included in the study and their parents or legal guardians.