Appel, Charlotte W. http://orcid.org/0000-0003-0397-9739
Balle, Annette M.
Krintel, Mads M.
Vittrup, Axel
Nielsen, Agnete H.
Vedsted, Peter
Article History
Received: 4 February 2020
Accepted: 10 September 2020
First Online: 21 September 2020
Ethics approval and consent to participate
: The project is registered at the Central Denmark Region Jrn.nr.: 1–16–02-457-15. Because the study was based on administrative databases no informed consent was necessary, and no formal ethics approval was required according to local ethics committee. ExternalRef removed
: Not applicable.
: The authors have declared no competing interests.