Received: 1 October 2020
Accepted: 7 June 2021
First Online: 22 June 2021
: According to Norwegian law, approval from the Norwegian National Research Ethics Committees was not required, but the study was registered with the Norwegian Centre for Research Data (NSD), project number 382861.
: The manuscript does not contain any individual person’s data in any form.
: The authors declare that they have no competing interests.