Friesgaard, Kristian D.
Kirkegaard, Hans
Rasmussen, Claus-Henrik
Giebner, Matthias
Christensen, Erika F.
Nikolajsen, Lone
Article History
Received: 30 January 2018
Accepted: 14 January 2019
First Online: 7 February 2019
Ethics approval and consent to participate
: Approved by the Danish Data Protection Agency (no. 1-16-02-294-16) and the National Board of Health (no. 3-3013-2002/1). The local ethics committee was consulted, and the study was approved with a waiver of patient consent.
: Not required.
: The authors declare that they have no competing interests.
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