1. From the Departments of Medicine/Cardiology (R.R.), University of Utah, Salt Lake City, UT; Saitama Medical University Faculty of Medicine (R.K), Saitama, Japan; the Departments of Medicine/Cardiology (M.M.Z., R.D.B., G.F.T., H.R.H.), Radiology (H.R.H.), and Biomedical Engineering (R.D.B., H.R.H.), Johns Hopkins Hospital, Baltimore, MD; the Departments of Medicine/Cardiology (T.M.D.), University of Maryland, Baltimore, MD; and the Department of Medicine (A.R.), Rambam Medical Center, Rappaport...