Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2016-07194)
Received: 3 July 2019
Accepted: 13 December 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: The study was approved by the Stockholm Regional Ethical Review Board (number: 2015/1463–1431 and 2016/549–32).
: Not applicable.
: The authors declare that they have no competing interests.