Wood, Thomas
Osredkar, Damjan
Puchades, Maja
Maes, Elke
Falck, Mari
Flatebø, Torun
Walløe, Lars
Sabir, Hemmen
Thoresen, Marianne
Article History
Received: 1 October 2015
Accepted: 22 February 2016
First Online: 21 March 2016
Competing interests
: The authors declare no competing financial interests.