1. Health Services Research and Development (HSR&D); Veterans Affairs (VA) Puget Sound Health Care System; Seattle WA USA
2. Department of Health Services; University of Washington; Seattle WA USA
3. Group Health Research Institute; Seattle WA USA
4. Primary and Specialty Medical Care Service; Veterans Affairs (VA) Puget Sound Health Care System; Seattle WA USA
5. Department of Medicine; University of Washington; Seattle WA USA