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This is the main page for the National Institute of Arthritis and Musculoskeletal and Skin Diseases, one component of the National Institutes of Health, part of the U.S. Department of Health and Human Services.

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Comparative Effectiveness Research for Better Decisionmaking: “The core question of comparative effectiveness research — which treatment works best, for whom, and under what circumstances — is a fundamental concern for patients and clinicians...

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