Angela Bångsbo1, Anna Dunér2, Synneve Dahlin-Ivanoff3, Eva Lidén4. 1. Sahlgrenska Academy, University of Gothenburg, Institute of Neuroscience and Physiology, Arvid Wallgrens Backe hus 2, Box 455, 405 30 Göteborg, Sweden; Sahlgrenska Academy, Centre of Ageing and Health, University of Gothenburg, 405 30 Göteborg, Sweden; R & D Sjuhärad Välfärd, University of Borås, 501 90 Borås, Sweden. Electronic address: angela.bangsbo@hb.se. 2. Department of Social Work, University of Gothenburg, Sprängkullsgat. 23, Box 720, 405 30 Göteborg, Sweden; Sahlgrenska Academy, Centre of Ageing and Health, University of Gothenburg, 405 30 Göteborg, Sweden. 3. Sahlgrenska Academy, University of Gothenburg, Institute of Neuroscience and Physiology, Arvid Wallgrens Backe hus 2, Box 455, 405 30 Göteborg, Sweden; Sahlgrenska Academy, Centre of Ageing and Health, University of Gothenburg, 405 30 Göteborg, Sweden. 4. Sahlgrenska Academy, Centre of Ageing and Health, University of Gothenburg, 405 30 Göteborg, Sweden; Sahlgrenska Academy, University of Gothenburg, Institute of Health and Care Sciences, Arvid Wallgrens Backe hus 1, Box 457, 405 30 Göteborg, Sweden.