Funding for this research was provided by:
Forskningsrådet om Hälsa, Arbetsliv och Välfärd (2014-0171)
Sahlgrenska Universitetssjukhuset (ALF 74580)
Received: 28 March 2019
Accepted: 31 May 2019
First Online: 14 June 2019
Ethics approval and consent to participate
: The study was approved by the regional ethics review board in Lund, Sweden. All participants provided written informed consent.
: Not Applicable.
: The authors declare that they have no competing interests.