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Authors
Elkjær, Mette https://orcid.org/0000-0002-8774-105X
Wolff, Donna Lykke
Primdahl, Jette
Mogensen, Christian Backer
Brabrand, Mikkel
Gram, Bibi
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Article History
Received: 14 April 2021
Accepted: 16 November 2021
First Online: 15 December 2021
Declarations
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: The study was reported to the Danish Data Protection Agency (file no. 2008-58-0035). In accordance with Danish law, register studies are exempted from gaining informed consent from participants. The need for formal ethical approval was waived by the Regional Scientific Ethical Committee for the Region of Southern Denmark (file no. 20182000–68) because the study did not involve biomedical interventions. Reporting followed the STROBE guidelines.
: Not applicable.
: The authors declare that they have no competing interests.
