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Authors
Hagquist, Curt
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Funding
Funding for this research was provided by:
University of Gothenburg
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Article History
Received: 21 September 2023
Accepted: 22 October 2024
First Online: 7 November 2024
Declarations
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: Ethical application was approved by the Central Ethical Review Board in Sweden (Ö 39–2011). All procedures performed were in accordance with the national ethical standards and with the 1964 Helsinki declaration. Informed consent was obtained from all participants included in the study. The individual consent was considered to have been given by completing the questionnaire. Statistics Sweden did not request parental/guardian consent for the students in grade 9.
: Not applicable.
: The authors declare no competing interests.
