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Authors
Sørensen, Christine Leonhard Birk
Grønborg, Therese Koops
Biering, Karin
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Article History
Received: 3 January 2022
Accepted: 23 June 2022
First Online: 2 July 2022
Declarations
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: The study was carried out according to the Declaration of Helsinki. According to Danish law, approval by the Ethics Committee is not required in questionnaire-based projects. Additional information is available at the National Committee on Health Research Ethics’ webpage in the “Act on Research Ethics Review of Health Research Projects” § 14,2. Here the rules regarding consent are stated, and only trials are mandatory to collect parental consent, not questionnaire-based studies like this. Available from ExternalRef removed. Verbal informed consent was obtained from all adolescents.
: Not applicable.
: The authors declare that they have no conflict of interest.
