Bank, S
Andersen, P S
Burisch, J
Pedersen, N
Roug, S
Galsgaard, J
Turino, S Y
Brodersen, J B
Rashid, S
Rasmussen, B K
Avlund, S
Olesen, T B
Hoffmann, H J
Thomsen, M K
Thomsen, V Ø
Frydenberg, M
Nexø, B A
Sode, J http://orcid.org/0000-0002-2718-9320
Vogel, U
Andersen, V
Article History
Received: 21 October 2013
Revised: 1 March 2014
Accepted: 10 March 2014
First Online: 29 April 2014
Competing interests
: The authors declare no conflict of interest.