Lind, Martin http://orcid.org/0000-0002-7204-813X
Strauss, Marc J.
Nielsen, Torsten
Engebretsen, Lars
Article History
Received: 31 May 2020
Accepted: 6 August 2020
First Online: 4 September 2020
Compliance with ethical standards
:
: The authors state no conflict of interest.
: No written consent is necessary in Denmark for studies based on data from the National Board of Health-approved national healthcare registries. However, the study was approved by the Regional Centre for Clinical Quality Development and the National Data Protection Agency (Approval number 1-16-02-65-17).