Funding for this research was provided by:
Received: 21 January 2021
Accepted: 19 February 2021
First Online: 26 February 2021
Ethics approval and consent to participate
: The study is conducted according to the declaration of Helsinki and is approved by The Regional Committees on Health Research Ethics for Southern Denmark (S-20180089).
: Not applicable.
: The authors declare that they have no competing interests.