Funding for this research was provided by:
Region Hovedstaden (part 1 from Forskningsfonden 2015)
Received: 13 December 2018
Accepted: 13 March 2019
First Online: 20 March 2019
Ethics approval and consent to participate
: Danish Ethics committee approval nr: H-16037372. Protocol version 3 updated: 18/03/2018.Written consent for participation will be obtained from all participants in this study.
: Consent for publication will be obtained from all participants in this study.
: The authors declare that they have no competing interests.
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