1. From The University of Washington, Departments of Epidemiology (C.L.C.), Biostatistics (P.H.), and Medicine (Division of Medical Genetics) (K.N., E.C.M., J.L., D.L., E.B., B.R.S., J.R., T.B., C.F., G.P.J.), Seattle, Wash; Puget Sound Veterans Affairs Health Care System (C.M.-G.), Seattle, Wash.