Funding for this research was provided by:
Helse Nord RHF (PFP1178-14)
Received: 18 March 2020
Accepted: 3 February 2021
First Online: 12 February 2021
Ethics approval and consent to participate
: The study was approved by the Data Protection Official in the health trusts. The participants were informed about the aims of the study, privacy, and the right to withdraw from the project. Written consent to participate was obtained from caregivers and adolescents. For children under the age of 12 years, only caregivers’ consent was collected. The Norwegian Regional Committees for Medical and Health Research Ethics evaluated the project and determined that their approval was not required.
: The authors have no competing interests to declare.