Solhaug, Anne Kristine
Røysamb, Espen
Oppedal, Brit
Funding for this research was provided by:
Norwegian Institute of Public Health
Article History
Received: 12 January 2023
Accepted: 21 March 2023
First Online: 18 April 2023
Declarations
:
: This study was performed in line with the principles of the Declaration of Helsinki. The Regional Committees for Medical and Health Research Ethics (REC) (2016/355) approved the study. Participation in the study was contingent on written informed consent. For children younger than 16 years old, legal guardians signed the consent and the children gave their verbal consent.
: Not applicable.
: The authors declare that they have no competing interests.