Pain 2008 Nov 2;140(1):224-230. Epub 2008 Oct 2.
Centre for Education and Research on Ageing, Concord Hospital, University of Sydney, Concord, 2139 NSW, Australia School of Public Health, University of Sydney, NSW, Australia ANZAC Research Institute, Concord Hospital, University of Sydney, NSW, Australia Institute of Bone and Joint Research, Royal North Shore Hospital, University of Sydney, NSW, Australia University of Sydney Pain Management Research Institute, Royal North Shore Hospital, Australia Service of Geriatric Medicine and Rehabilitation, CHUV, Lausanne, Switzerland.