Haugland, Elisabeth Straume https://orcid.org/0000-0002-6964-3480
Aadland, Eivind
Nilsen, Ada Kristine Ofrim
Lervåg, Arne Ola
Aadland, Katrine Nyvoll
Funding for this research was provided by:
Western Norway University Of Applied Sciences
Article History
Received: 3 July 2024
Accepted: 28 November 2025
First Online: 8 December 2025
Declarations
:
: Parents of all participating children received oral and written information about the study and provided written consent prior to testing. The institutional ethics committee and the Norwegian Centre for Research Data (NSD) approved the study (reference number 248220). All procedures and methods conform to the World Medical Association`s Declaration of Helsinki’s ethical guidelines and subsequent revisions.
: Not applicable.
: The authors declare no competing interests.
: clinicaltrials.gov, identifier NCT04048967, registered August 7, 2019, .