Margaritis, Vasileios http://orcid.org/0000-0002-7790-2243
Alaraudanjoki, Viivi
Laitala, Marja-Liisa
Anttonen, Vuokko
Bors, Andreea
Szekely, Melinda
Alifragki, Panagiota
Jász, Máté
Berze, Ildikó
Hermann, Péter
Harding, Mairead
Article History
Received: 30 December 2019
Accepted: 15 September 2020
First Online: 22 September 2020
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 research committee of each research site (in Finland by the Ethical Committee of the Northern Ostrobothnia Hospital District (11.9.2017, #70/2017 240§); in Romania, by the Research Ethics Committee of the University of Medicine and Pharmacy of Tirgu-Mures (27.09.2017, #312); in the USA/Greece by the Walden University Institution Review Board (#03-01-17-6274274)) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent forms were received from all the participants and parents/guardians when needed and confidentiality of the data was confirmed.