1 Norwegian Center for Research, Education and Service Development, Vestfold Hospital Trust, T⊘nsberg, Norway ; Faculty of Health and Sport Sciences, University of Agder, Kristiansand, Norway ; Center for Old Age Psychiatric Research, Innlandet Hospital Trust, Ottestad, Norway.
2 Norwegian Center for Research, Education and Service Development, Vestfold Hospital Trust, T⊘nsberg, Norway ; Center for Old Age Psychiatric Research, Innlandet Hospital Trust, Ottestad, Norway ; Department of Nursing Science, Faculty of Medicine, University of Oslo, Oslo, Norway.
3 Center for Old Age Psychiatric Research, Innlandet Hospital Trust, Ottestad, Norway.
4 Faculty of Health and Sport Sciences, University of Agder, Kristiansand, Norway.
5 Norwegian Center for Research, Education and Service Development, Vestfold Hospital Trust, T⊘nsberg, Norway ; Center for Old Age Psychiatric Research, Innlandet Hospital Trust, Ottestad, Norway ; Faculty of Health, Care and Nursing, Gj⊘vik University College, Gj⊘vik, Norway.