1. University of Hull; Clinical Psychology & Ageing, Institute of Rehabilitation; c/o Coltman Street Day Hospital Coltman Street Hull UK HU3 2SG
2. Newcastle General Hospital; Centre for the Health of the Elderly; Westgate Road Newcastle upon Tyne UK NE4 6BE
3. Nuffield Department of Medicine, University of Oxford; Cochrane Dementia and Cognitive Improvement Group; John Radcliffe Hospital (4th Floor, Room 4401C) Headington Oxford UK OX3 9DU
4. University Hospital of Maastricht; PO Box 5800 Maastricht Netherlands 6202 AZ
5. Maastricht University Medical Center; Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Alzheimer Center Limburg; PO Box 616 Maastricht Netherlands 6200