1. Health Services and Rehabilitation Research and Development, VA Puget Sound Health Care System, Department of Veterans Affairs, Seattle, Washington
2. Department of Health Services, University of Washington, Seattle, Washington
3. Department of Epidemiology, University of Washington, Seattle, Washington
4. Department of Family Medicine, University of Washington, Seattle, Washington
5. Department of Orthopedic Surgery, University of Washington, Seattle, Washington
6. Joslin Diabetes Center at Swedish Medical Center, Seattle, Washington