Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2016-07115)
Received: 28 August 2018
Accepted: 25 January 2019
First Online: 4 February 2019
Ethics approval and consent to participate
: An ethics approval for this study was obtained from the Regional Ethics Committee in Stockholm (Regionala Etikprövningsnämnden), Dnr. 2011/136–31/5.
: Not applicable
: The authors declare that they have no competing interests.
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