Bottermann, Maria
Lode, Heidrun Elisabeth
Watkinson, Ruth E.
Foss, Stian
Sandlie, Inger
Andersen, Jan Terje
James, Leo C.
Article History
Received: 2 August 2016
Accepted: 25 October 2016
First Online: 24 November 2016
Competing interests
: The authors declare no competing financial interests.