Bliddal, Mette http://orcid.org/0000-0002-7637-3730
Broe, Anne http://orcid.org/0000-0002-4149-8808
Pottegård, Anton http://orcid.org/0000-0001-9314-5679
Olsen, Jørn
Langhoff-Roos, Jens http://orcid.org/0000-0003-2838-2533
Article History
Received: 9 November 2017
Accepted: 12 January 2018
First Online: 19 January 2018
Compliance with Ethical Standards
:
: The authors declare no conflicts of interest.