Kolnes, Liv-Jorunn
Stensrud, Trine
Andersen, Oddbjørn Klomsten
Article History
Received: 14 August 2023
Accepted: 28 December 2023
First Online: 11 January 2024
Declarations
:
: The intervention was performed in accordance with relevant guidelines, regulations and ethical principles (such as defined in the Declaration of Helsinki). Written informed consent was obtained from the participants and their parents prior to inclusion. The study received ethical approval from the Regional Ethics Committee of Southern Norway (REC, 2016/1723, November 27th 2018).
: Not applicable.
: The authors declare no competing interests.