1. Department of Medicine (J.K.A., B.D.A., A.M.M., W.J.B.), University of Washington, Seattle, Washington 98195
2. Department of Medicine (R.S.S., C.W.), Harbor-University of California, Los Angeles Medical Center, Torrance, California 90509
3. General Clinical Research Center (C.W.), Harbor-University of California, Los Angeles Medical Center, Torrance, California 90509
4. Veterans Affairs-Puget Sound Health Care System (B.D.A., A.M.M.), University of Washington, Seattle, Washington 98195
5. Geriatric Research, Education, and Clinical Center (A.M.M.), University of Washington, Seattle, Washington 98195
6. Department of Clinical Pharmacology (S.E.W., L.J.H., R.V.C.), GlaxoSmithKline Research and Development, Research Triangle Park, North Carolina 27709