1. Institute of Health, Faculty of Social Sciences, University of Stavanger, Stavanger, Norway
2. Centre for Age-Related Medicine, Stavanger University Hospital, Stavanger, Norway
3. Department of Research and Innovation, Helse-Fonna HF, Haugesund Norway
4. Faculty of Medicine, Institute of Clinical Medicine, University of Bergen, Bergen, Norway
5. Department of Old age psychiatry, Institute of Psychiatry, Psychology & Neuroscience, King’s College London