Nilsson, Moa https://orcid.org/0000-0002-6134-9842
Claréus, Benjamin https://orcid.org/0000-0003-0972-6660
Bjärehed, Jonas https://orcid.org/0000-0002-2128-6031
Bjärehed, Marlene https://orcid.org/0000-0001-5753-1310
Daukantaitė, Daiva https://orcid.org/0000-0002-1994-041X
Funding for this research was provided by:
Kristianstad University
Article History
Received: 11 February 2025
Accepted: 9 May 2025
First Online: 21 May 2025
Declarations
:
: The authors declare no competing interests.
: Ethical approval for data collection in 2007–2008 was obtained from the Regional Ethics Committee at Lund University (no. 2016/1059); in 2023–2024, it was obtained from the Swedish National Ethical Review Board (no. 2021-06695-01).
: Not applicable.
: Consent was obtained from all participants, with passive consent provided by legal guardians for those under 15 years of age. Guardians were informed that they could contact the research leader if they wished to withdraw their child from the study.