1. Department of Clinical Science; University of Bergen; Bergen Norway
2. Centre for Age-Related Diseases (SESAM); Stavanger University Hospital; Stavanger Norway
3. Department of Internal Medicine; Haraldsplass Deaconess Hospital; Bergen Norway
4. University of Exeter Medical School; Exeter UK
5. Department of Old Age Psychiatry, Institute of Psychiatry, Psychology and Neuroscience; Kings College; London UK