Qvick, Jemina https://orcid.org/0009-0003-2835-2200
Hintsanen, Mirka https://orcid.org/0000-0003-2673-0901
Vahlberg, Tero
Volanen, Salla-Maarit
Funding for this research was provided by:
University of Oulu
Article History
Received: 3 April 2025
Accepted: 29 December 2025
First Online: 16 January 2026
Declarations
:
: The authors declare no conflicts of interest.
: All participating students and their parents voluntarily offered written informed consent.
: The study was approved by the ethical review board of the University of Helsinki (Statement 1/2014).