1. Prevalence of doctor-diagnosed arthritis and arthritis-attributable activity limitation: United States, 2007-2009;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2010
2. Projections of US prevalence of arthritis and associated activity limitations;Hootman;Arthritis Rheum,2006
3. Prevalence and most common causes of disability among adults: United States, 2005;Centers for Disease Control and Prevention;MMWR Morb Mortal Wkly Rep,2009
4. Recommendations for the medical management of osteoarthritis of the hip and knee: 2000 update;American College of Rheumatology Subcommittee on Osteoarthritis Guidelines;Arthritis Rheum,2000