Birkegård, Anna Camilla http://orcid.org/0000-0003-2968-5798
Halasa, Tariq http://orcid.org/0000-0003-1112-0254
Græsbøll, Kaare
Clasen, Julie
Folkesson, Anders http://orcid.org/0000-0002-2175-830X
Toft, Nils
Article History
Received: 1 June 2017
Accepted: 3 August 2017
First Online: 29 August 2017
Competing Interests
: The authors declare that they have no competing interests.