1. From the Cardiovascular Research Center (A.C.D., N.M., M.J.L., R.P.S., S.N.O., M.D.S., C.A.M.), Division of Cardiovascular Medicine/Department of Medicine (A.C.D., N.M., M.J.L., R.P.S., S.N.O., M.D.S., J.Y., S.S.R., C.A.M.), and Center for Public Health Genomics (S.S.R.), University of Virginia, Charlottesville; and Departments of Biochemistry (A.B.L., D.W.B.) and Internal Medicine (D.W.B.) and Center for Human Genomics (A.B.L., D.W.B.), Wake Forest University School of Medicine, Winston-Salem, NC.