Nielsen, Nicolai Østergaard http://orcid.org/0000-0002-2791-9573
Nørlinger, Christian
Greve, Thomas
Klug, Tejs Ehlers
Article History
Received: 13 September 2021
Accepted: 29 September 2021
First Online: 8 October 2021
Declarations
:
: The authors received no conflicts of interest to declare that are relevant to the content of this article.
: The study was approved by the Danish Data Protection Agency (1-16-02-587-18) and the Danish Patient Safety Authority (3-3013-2919/1). In accordance with Danish law, the study was not reported to the Ethics Committee of Aarhus County.
: According to Danish law, it is illegal to contact patients to obtain informed consent in retrospective studies, but permission to conduct the study was given by the Danish Patient Safety Authority.