Andersen, Sigve
Richardsen, Elin
Moi, Line
Donnem, Tom
Nordby, Yngve
Ness, Nora
Holman, Marte Eilertsen
Bremnes, Roy M.
Busund, Lill-Tove
Article History
Received: 8 June 2016
Accepted: 17 October 2016
First Online: 8 November 2016
Competing interests
: The authors declare no competing financial interests.