From Agilent Technologies Inc (D.X.-F.D., A.T., A.V., A.B.-D., I.E., R. Kincaid, Z.Y., L.B.), Palo Alto, Calif; and Donald W. Reynolds Cardiovascular Clinical Research Center (R. Kundu, R.T., T.Q.), Stanford University School of Medicine, Calif. (2006-02-03時点)