1. From the Stanford Cardiovascular Institute (S.-G.O., W.H.L., M.H., D.D., K.K., V.S.-F., J.D.G., J.C.W.); and Division of Cardiology, Department of Medicine (S.-G.O., W.H.L., K.K., V.S.-F., J.C.W.), Department of Radiology (M.H., D.D., J.C.W.), and Department of Cardiothoracic Surgery (J.D.G.), Stanford University School of Medicine, CA.