Funding for this research was provided by:
Received: 1 September 2016
Accepted: 8 February 2018
First Online: 15 February 2018
Ethics approval and consent to participate
: All patients gave informed written consent and the project was in compliance with the Helsinki Declaration. The Central Denmark Region Committee on Biomedical Research Ethics approved the project (M-20080012).
: Not applicable
: The authors declare that they have no competing interests.
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