1. Division of Research; Kaiser Permanente Northern California; Oakland; CA; USA
2. UAB Center for Education and Research and Therapeutics of Musculoskeletal Disorders; University of Alabama at Birmingham; Birmingham; AL; USA
3. Department of Medicine; Department of Biostatistics and Epidemiology; Center for Epidemiology and Biostatistics; University of Pennsylvania; Philadelphia; PA; USA
4. Division of Rheumatology; Brigham and Women's Hospital; Boston; MA; USA
5. Departments of Preventive Medicine and Medicine; Vanderbilt University School of Medicine and the Mid-South Geriatric Research Education and Clinical Center; Veterans Administration Tennessee Valley Health Care System; Nashville; TN; USA
6. US Food and Drug Administration; Silver Spring; MD; USA
7. Department of Rheumatology; University of Toronto; Toronto; Canada
8. Department of Medicine; Brigham and Women's Hospital; Boston; MA; USA
9. Oregon Health and Sciences University; Portland; OR; USA
10. US Agency for Healthcare Research and Quality; Center for Outcomes and Evidence; Rockville; MD; USA