1. Fibromyalgia criteria and severity scales for clinical and epidemiological studies: a modification of the ACR preliminary diagnostic criteria for fibromyalgia;Wolfe;J Rheumatol,2011
2. Racial and ethnic disparities in pain: causes and consequences of unequal care;Anderson;J Pain,2009
3. A global strategic business report. 2011;Pain Management,2011
4. Committee on Advancing Pain Research Care and Education. Relieving pain in America : a blueprint for transforming prevention, care, education, and research;Institute of Medicine (U.S.),2011
5. National and state medical expenditures and lost earnings attributable to arthritis and other rheumatic conditions–United States, 2003;Centers for Disease Control and Prevention (CDC);MMWR Morb Mortal Wkly Rep,2007