1. From the Department of Medicine (L.R.T., K.D.O., R.H.K., B.R., B.F., M.H.W., S.E.K., A.C.), University of Washington, Seattle, and the Veterans Administration Puget Sound Health Care System (S.E.K.), Seattle, Wash. L.R.T. is currently at the Department of Medicine, University of Kentucky, Lexington.