Starr John M, Kilgour Alixe, Pattie Alison, Gow Alan, Bates Timothy C, Deary Ian J
Centre for Cognitive Ageing and Cognitive Epidemiology, Geriatric Medicine Unit, University of Edinburgh, UK.
Age Ageing. 2010 Mar;39(2):272-5. doi: 10.1093/ageing/afp258. Epub 2010 Jan 11.