1. From the Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA (A.U., M.P., E.A., M.P.T., V.F.); Veterans Affairs Palo Alto Health Care System, Palo Alto, CA (N.A.J., A.W., E.A., M.P.T., V.F.); and Seattle, WA (D.H.).