1. From the Department of Pathology (N.S.J., R.P.T.) and the Department of Biochemistry (R.P.T.), College of Medicine, University of Vermont, Burlington; the Department of Medicine (M.S.O., L.A.L., S.E.H.), Royal Free and University College Medical School, Rayne Institute, London, UK; the Department of Epidemiology (L.H.K.), University of Pittsburgh, Pittsburgh, Pa; the Department of Biostatistics (A.M.A.), University of Washington, Seattle; and the National Heart, Lung, and Blood Institute (A.R.S.),...