From St David's Medical Center and Texas Cardiac Arrhythmia Center (D.P., P.M., L.D.B., P.V., R.H., J.S., J.G., D.S.C., J.Z., R.C., S.B., J.D.B., A.N.), Austin, Tex; Akron General Hospital (J.E.C., R.S.), Akron, Ohio; Stanford University (P.W., A.A.-A.), Palo Alto, Calif; Metro Health Hospital (W.R.L., K.Q.), Case Western Reserve, Cleveland, Ohio; California Pacific Medical Center (S.H., S.B.), San Francisco, Calif; Kansas University (D.L.), Lawrence, Kan; the University of Cincinnati (M.S., E.N.),... (At 2010-10)