[1] Austin Hlth Hosp, Cardiol, Melbourne, Vic, Australia
[2] Univ Hosp Rennes, Cardiol, Rennes, France
[3] Osped Niguarda Ca Granda, Cardiac, Milan, Italy
[4] Maggiore Hosp Crema, Cardiol, Crema, Italy
[5] Med Univ Graz, Graz, Austria
[6] Policlin Fdn San Matteo IRCCS, Cardiac, Pavia, Italy
[7] St Jude Med, Res, Sylmar, CA USA
[8] Massachusetts Gen Hosp, Cardiac Arrhythmia Serv, Boston, MA 02114 USA
[9] Maria Cecilia Hosp, Arrhythmol, Cotignola, Italy