Mackenzie Lorna, James Ian Andrew, Morse Rachel, Mukaetova-Ladinska Elizabeta, Reichelt F Katharina
Centre for the Health of the Elderly, Newcastle General Hospital, Westgate Rd, Newcastle upon Tyne NE4 6BE, UK.
Age Ageing. 2006 Jul;35(4):441-4. doi: 10.1093/ageing/afl007. Epub 2006 Apr 25.