Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2015-00412)
Article History
Received: 8 June 2018
Accepted: 9 January 2019
First Online: 25 January 2019
Ethics approval and consent to participate
: The study was approved by the Regional Ethical Board in Stockholm, Sweden, no. 2014/1498-31/2. All procedures followed were in accordance with the ethical permission.
: The ethical permission included permission to publish data.
: The authors declare that they have no competing interests.
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