Article History
Received: 6 September 2020
Accepted: 10 May 2021
First Online: 8 July 2021
Declarations
:
: Approval from an Ethics Committee was not required according to Danish law (Law 502, May 23, 2018, §10). The law implies that it is not required to obtain consent to participation for studies based on register data in Denmark. The data used in this study is an irreversibly anonymized version of a data set established in 2006, with permission granted from The Danish Data Board (“Datatilsynet”) protocol # 2006–41-7019. For an overview of the Danish registers and their use, see [CitationRef removed].
: Not applicable.
: None relevant.