Pettersson, Katina
Johansen, Mette
Jahnsen, Reidun
Rodby-Bousquet, Elisabet
Funding for this research was provided by:
Uppsala University
Article History
Received: 22 January 2025
Accepted: 9 April 2025
First Online: 29 April 2025
Declarations
:
: Ethical approval was obtained from the Regional Ethics Review Board, Lund, 2018/1000 in Sweden, from the Regional Committees for Medical and Health Research Ethics 2017/2457 REK South-East D in Norway, and from Aalborg University Hospital, Region Nordjylland, No. 2019 − 138 in Denmark. The study was carried out in compliance with the Declaration of Helsinki, the national legislations, and the institutional requirements. The legal caregivers of all participants gave their informed consent for data held in the registry to be used for research and publication. Written consent from the parents or legal guardians was not required for this research based on stored data.
: Not applicable.
: The authors declare no competing interests.