Funding for this research was provided by:
The Dam Foundation (2019/FO244724)
Norwegian Institute of Public Health
Article History
Accepted: 13 March 2025
First Online: 10 April 2025
Declarations
:
: The study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Regional Committees for Medical and Health Research Ethics (REC) (2016/355). The study was registered in ClinicalTrials.gov (16/54751, registered 30.01.2019).
: All participants signed a written informed consent. For children younger than 16 years old, legal guardians signed the consent and the children gave their verbal consent.
: The authors declare no competing interests.