Helgesen, Ann Karin http://orcid.org/0000-0003-4572-9439
Gregersen, Anne Grethe
Roos, Anne Karine Østbye
Funding for this research was provided by:
Østfold University College
Article History
Received: 14 January 2016
Accepted: 27 July 2016
First Online: 8 August 2016