1. Division of Cardiovascular Disease, Mayo Clinic, Rochester, MN (G.B., C.A., W.L.M., P.T., Y.T., H.I.M., S.P., M.E.-S.).
2. Division of Cardiology, Department of Medicine, University of Verona, Italy (G.B., A.R.).
3. Department of Cardiology, Tel Aviv Medical Center, Sackler Faculty of Medicine, Israel (Y.T.).