1. Faculty of Nursing and Midwifery, University of Iceland, Eirberg, Reykjavik, Iceland
2. Landspitali University Hospital, Hringbraut, Reykjavik, Iceland
3. School of Nursing, University of Michigan, Ann Arbor, MI, USA
4. The Social Science Research Institute, University of Iceland, Gimli, Sæmundargata, Reykjavík, Iceland