[1] Univ Rochester, Sch Med & Dent, Heart Res Follow Up Program, Rochester, NY USA
[2] Summit Med Grp, Short Hills, NJ USA
[3] Cleveland Clin, Dept Cardiovasc Med, Cardiac Pacing & Electrophysiol, Cleveland, OH 44106 USA
[4] Med Univ Lodz, Dept Electrocardiol, Lodz, Poland
[5] Med Univ Warsaw, Dept Cardiol 1, Warsaw, Poland
[6] Queens Univ, Heart Rhythm Serv, Kingston, ON, Canada
[7] Univ Athens, Med Sch, Hippokrat Hosp, Dept Cardiol 1, Athens, Greece
[8] Clin & Matern Suizo Argentina & De Los Arcos Priv, Arrhythmias & Electrophysiol Serv, Buenos Aires, DF, Argentina
[9] Suny Downstate Med Ctr, Brooklyn, NY 11203 USA
[10] Med Univ Warsaw, Med Fac 2, Dept Cardiol Hypertens & Internal Med, Warsaw, Poland
[11] Med Univ Lodz, Bieganski Hosp, Dept Cardiol, Lodz, Poland
[12] IRCCS, Dept Cardiol, Fdn Salvatore Maugeri, Pavia, Italy
[13] Calif State Univ Long Beach, Long Beach, CA 90840 USA
[14] Osped Niguarda Ca Granda, Cardiovasc Dept, Cardiol, Electrophysiol, Milan, Italy
[15] Valley Hosp, Ridgewood, NJ USA
[16] Univ Iowa, Carver Coll Med, Iowa City, IA USA
[17] Inst Cardiol, Telecardiol Ctr, Warsaw, Poland
[18] Univ Southern Calif, Los Angeles, CA USA
[19] Harvard Med Sch, Brigham & Womens Hosp, Vasc Profiling Res Grp, Cardiovasc Div, Boston, MA USA
[20] Oregon Hlth & Sci Univ, Knight Cardiovasc Inst, Portland, OR 97201 USA
[21] Johns Hopkins Univ, Sch Med, Cardiovasc Div, Baltimore, MD USA
[22] New York Methodist Hosp, Weill Cornell Med Coll, Electrophysiol Serv, Brooklyn, NY USA
[23] Harvard Med Sch, Harvard Thorndike Electrophysiol Inst, Beth Israel Deaconess Med Ctr, Div Cardiovasc Med, Boston, MA USA
[24] Natl Inst Cardiol, Dept Cardiac Rehabil & Noninvas Electrocardiol, Warsaw, Poland