1. The prevalence of chronic pain in Canada;Schopflocher;Pain Res Manag,2011
2. Survey of chronic pain in Europe: prevalence, impact on daily life, and treatment;Breivik;Eur J Pain,2006
3. Osteoarthritis;Creamer;Lancet,1997
4. Pathogenesis and treatment of osteoarthritis;Kraus;Med Clin North Am,1997
5. Burden of major musculoskeletal conditions;Woolf;Bull World Health Organ,2003