Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd
Received: 12 May 2020
Accepted: 28 October 2020
First Online: 16 November 2020
Ethics approval and consent to participate
: The project was approved by the Regional Ethical Review Board in Stockholm, Sweden. The Ethical Review Board also waived the requirement that informed consent of research subjects should be obtained.
: Not applicable.
: The authors declare that they have no competing interests.