Ailte, Ieva
Lingelem, Anne Berit Dyve
Kavaliauskiene, Simona
Bergan, Jonas
Kvalvaag, Audun Sverre
Myrann, Anne-Grethe
Skotland, Tore
Sandvig, Kirsten
Article History
Received: 15 February 2016
Accepted: 30 June 2016
First Online: 26 July 2016
Competing interests
: The authors declare no competing financial interests.