title: The prevalence of pain over time: going up, going down or just staying the same?
authors.affiliation: Aberdeen Pain Research Collaboration (Epidemiology Group), Institute of Applied Health Sciences, School of Medicine and Dentistry, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, Scotland AB25 2ZD, UK.
authors.forename: Gary J
authors.initials: GJ
authors.lastname: Macfarlane