Received: 22 September 2020
Accepted: 10 February 2021
First Online: 22 February 2021
Ethics approval and consent to participate
: Ethics approval was issued by the Research Ethics Committee of the Hungarian Medical Research Council (Egészségügyi Tudományos Tanács) under the approval number ETT TUKEB 47848-7/2018/EKU.
: Before data collection, the parents of all students wishing to participate were asked to sign a written form of consent for their children to be included. The children of non-consenting parents did not participate in data collection. Informed consent was obtained from all individual participants included in the study.
: The authors consent for publication of this paper. All authors have read and approved the final manuscript. This manuscript has not been published and is not under consideration for publication elsewhere.
: The authors declare that they have no competing interests. The authors report no conflict of interest.