1. Department of Cardiology, Royal Melbourne Hospital, Melbourne, Australia (G.R.W., C.J.N., G.L., R.P., A.A.-K., A.M., J.M.K.).
2. Department of Medicine, University of Melbourne, Australia (G.R.W., C.J.N., R.P., A.A.-K., J.M.K.). Baker Institute, Melbourne, Australia (A.V., D.C., S.P., H.S., L.-H.L., P.M.K.).
3. Heart Centre, Alfred Hospital, Melbourne, Australia (A.V., D.C., S.P., L.-H.L., P.M.K.). Centre for Heart Rhythm Disorders, Royal Adelaide Hospital, Australia (P.S.).