Nesbø, Camilla L
S Swithers, Kristen
Dahle, Håkon
Haverkamp, Thomas H A
Birkeland, Nils-Kåre
Sokolova, Tatiana
Kublanov, Ilya
Zhaxybayeva, Olga
Article History
Received: 28 July 2014
Revised: 3 November 2014
Accepted: 10 November 2014
First Online: 12 December 2014
Competing interests
: The authors declare no conflict of interest.