Macfarlane Gary J, Jones Gareth T, Hannaford Philip C
Aberdeen Pain Research Collaboration, Epidemiology Group, University of Aberdeen, United Kingdom Aberdeen Pain Research Collaboration, Department of General Practice and Primary Care, University of Aberdeen, United Kingdom.
Pain. 2006 Jun;122(3):219-222. doi: 10.1016/j.pain.2006.03.013. Epub 2006 Apr 12.