Kjersem, Janne B
Skovlund, Eva
Ikdahl, Tone
Guren, Tormod
Kersten, Christian
Dalsgaard, Astrid M
Yilmaz, Mette K
Fokstuen, Tone
Tveit, Kjell M
Kure, Elin H
Article History
Received: 6 January 2014
Accepted: 9 May 2014
First Online: 19 May 2014