Hovaldt, H B
Suppli, N P
Olsen, M H
Steding-Jessen, M
Hansen, D G
Møller, H
Johansen, C
Dalton, S O
Article History
Received: 29 August 2014
Revised: 7 January 2015
Accepted: 27 January 2015
First Online: 26 February 2015
Competing interests
: The authors declare no conflict of interest.