Andersen, Klaus Kaae
Duun-Henriksen, Anne Katrine
Frederiksen, Marie Hoffmann
Winther, Jeanette Falck
Article History
Received: 6 September 2016
Revised: 5 December 2016
Accepted: 8 December 2016
First Online: 12 January 2017
Competing interests
: The authors declare no conflict of interest.