Kirkegaard, Anne Marie
Breckling, Maria
Nielsen, Dorte Guldbrand
Tolstrup, Janne S.
Johnsen, Søren Paaske
Ersbøll, Annette Kjær
Kloster, Stine
Article History
Received: 31 May 2021
Accepted: 16 November 2021
First Online: 7 December 2021
Declarations
:
: The study was approved by the Danish Data Protection Agency (2015-57-0008, no.16/48885). In Denmark, written informed consent or ethical approval is not required for register-based studies [CitationRef removed].
: Not applicable.
: The authors declares that they have no competing interests.