[1] Univ Rochester, Sch Med & Dent, Heart Res Follow Program, 601 Elmwood Ave, 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] Heart Rhythm Serv Queens Univ, Kingston, ON, Canada
[7] Univ Athens, Med Sch, Dept Cardiol 1, Hippokrat Hosp, Athens, Greece
[8] Clin & Matern Suizo Argentina, Arrhythmias & Electrophysiol Serv, Buenos Aires, DF, Argentina
[9] De Los Arcos Private Hosp, Buenos Aires, DF, Argentina
[10] Suny Downstate Med Ctr, Brooklyn, NY 11203 USA
[11] Med Univ Warsaw, Med Fac 2, Dept Cardiol Hypertens & Internal Med, Warsaw, Poland
[12] Med Univ Lodz, Dept Cardiol, Bieganski Hosp, Lodz, Poland
[13] IRCCS Fdn Salvatore Maugeri, Dept Cardiol, Pavia, Italy
[14] Calif State Univ Long Beach, Long Beach, CA 90840 USA
[15] Osped Niguarda Ca Granda, Cardiovasc Dept Cardiol Electrophysiol, Milan, Italy
[16] Valley Hosp, Ridgewood, NJ USA
[17] Univ Iowa, Carver Coll Med, Iowa City, IA USA
[18] Inst Cardiol, Telecardiol Ctr, Warsaw, Poland
[19] Univ Southern Calif, Los Angeles, CA USA
[20] Brigham & Womens Hosp, Harvard Med Sch, Div Cardiovasc, Vasc Profiling Res Grp, 75 Francis St, Boston, MA 02115 USA
[21] Oregon Hlth & Sci Univ, Knight Cardiovasc Inst, Portland, OR 97201 USA
[22] Johns Hopkins Univ, Sch Med, Div Cardiovasc, Baltimore, MD USA
[23] New York Methodist Hosp, Electrophysiol Serv, Weill Cornell Med Coll, Brooklyn, NY USA
[24] Harvard Thorndike Elect Inst, Harvard Med Sch, Beth Israel Deaconess Med Ctr, Div Cardiovasc Med, Boston, MA USA
[25] Natl Inst Cardiol, Dept Cardiac Rehabil & Noninvas Electrocardiol, Warsaw, Poland