Hermansen, Thomas S.
Ravn, Pernille
Svensson, Erik http://orcid.org/0000-0003-0797-1080
Lillebaek, Troels
Article History
Received: 27 February 2017
Accepted: 22 June 2017
First Online: 27 July 2017
Competing Interests
: The authors declare that they have no competing interests.