Funding for this research was provided by:
Region Zealand, Denmark
Danish Knowledge Center for Rehabilitation and Palliative Care
Received: 25 October 2017
Accepted: 21 February 2018
First Online: 1 March 2018
: Not applicable.
: No patients were involved in this study. The study has been approved by the Danish Data Protection Agency (REG-58-2014).
: All participants gave consent for publication.
: The authors declare that they have no competing interests.
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