1. From the Division of Cardiovascular Diseases (Y.-M.C., P.C., J.K.O., C.M., D.L.H., R.F.R., S.J.A., T.L.W., C.M.D.), the Department of Radiology, (B.J.K.), and the Division of Biomedical Statistics and Informatics (D.O.H., R.M.H.), Mayo Clinic, Rochester, MN; the Department of Cardiology (Y.-X.D., Y.-z.Y.), the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China; and the Krannert Institute of Cardiology (Y.Z., P.-S.C.), Indiana University School of Medicine, Indianapolis, IN.