Husky, Mathilde M. http://orcid.org/0000-0001-5314-1403
Bitfoi, Adina
Chan-Chee, Christine
Carta, Mauro Giovanni
Goelitz, Dietmar
Koç, Ceren
Lesinskiene, Sigita
Mihova, Zlatka
Otten, Roy
Shojaei, Taraneh
Kovess-Masfety, Viviane
Funding for this research was provided by:
European union (2006336)
Article History
Received: 8 October 2020
Accepted: 8 June 2021
First Online: 14 June 2021
Declarations
:
: The authors declare that they have no conflict of interest.
: The study was conducted in accordance with the ethical standards of the 1964 Helsinki Declaration and its later amendments. Participating countries obtained approval of their relevant ethical committees which reviewed the study. Parents received an information letter and a consent form to be signed and returned to the school if they opposed their child’s participation in the study.