1. Health Services Research and Development, Department of Veterans Affairs, VA Puget Sound Health Care System, Seattle, Washington, USA
2. Department of Medicinal Chemistry, University of Washington, Seattle, Washington, USA
3. Primary and Specialty Medical Services, Division of Dermatology, VA Puget Sound Health Care System, Seattle, Washington, USA
4. Department of Medicine, University Washington, Seattle, Washington, USA
5. Department of Health Services and Epidemiology, University of Washington, Seattle, Washington, USA