1. From the Department of Cardiology (T.E.W., G.L., S.S., J.M.K.) and Department of Cardiothoracic Surgery (M.L., V.A., P.A., J.G., M.O.K.), Royal Melbourne Hospital, Melbourne, Australia; Department of Medicine, University of Melbourne, Melbourne, Australia (T.E.W., G.L., P.M.K., J.M.K.); Centre for Heart Rhythm Disorder, University of Adelaide and Department of Cardiology, Royal Adelaide Hospital, Adelaide, Australia (P.S.); and Department of Cardiology, Alfred Hospital and Baker IDI, Melbourne,...