Petersen, Lene M
Holm, Dorte K
Knudsen, Peter B
Nielsen, Kristian F
Gotfredsen, Charlotte H
Mortensen, Uffe H
Larsen, Thomas O
Article History
Received: 29 April 2014
Revised: 18 June 2014
Accepted: 14 August 2014
First Online: 8 October 2014