1. From the Stanford University Medical Center, Stanford, Calif (W.F.F.); University of Health Sciences, Medical Informatics and Technology, Hall in Tirol, Austria (B.B., R.M.G., U.S.); Catharina Hospital, Eindhoven, the Netherlands (P.A.L.T., N.H.J.P.); Cardiovascular Center Aalst, Aalst, Belgium (B.D.B.); and Massachusetts General Hospital, Harvard Medical School, Boston (U.S.).