Voss, Sidsel Skou
Nielsen, Jens
Valentiner-Branth, Palle
Article History
Received: 30 July 2021
Accepted: 7 February 2022
First Online: 11 February 2022
Declarations
:
: We used only administrative register data for the study. According to Danish law, ethics approval is exempt for such research, and the Danish Data Protection Agency, which is a dedicated ethics and legal oversight body, thus waives ethical approval for our study of administrative register data, when no individual contact of participants is necessary and only aggregate results are included as findings. The study is therefore fully compliant with all legal and ethical requirements and there are no further processes available regarding such studies. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: All authors have no competing interest to declare.