From the Department of Cardiovascular Medicine (J.E.C., R.A.S., W.I.S., J.D.B., A.V., M.A.D., J.L.D., F.K., A.N.), Section of Pacing and Electrophysiology, The Cleveland Clinic Foundation, Cleveland, Ohio, and Klinicum Coburg (J.B., J.G., V.S.), Coburg, Germany. (At 2005-07-26)