[1] Cleveland Clin, Cleveland, OH 44106 USA
[2] CHU Trousseau, Tours, France
[3] Waikato Hosp, Hamilton, New Zealand
[4] McMaster Univ, Dept Med, Div Cardiol, Populat Hlth Res Inst, Hamilton, ON, Canada
[5] Duke Univ, Med Ctr, Durham, NC USA
[6] Univ CEU San Pablo, Grp HM Hosp, Madrid, Spain
[7] Ctr Privado Cardiol, San Miguel De Tucuman, Argentina
[8] Johns Hopkins Univ, Baltimore, MD USA
[9] Inst Cardiol Infantil, Serv Arritmias, Montevideo, Uruguay
[10] Clin & Maternidad Suizo Argentina & De Los Arcos, Buenos Aires, DF, Argentina
[11] Virginia Commonwealth Univ, Med Ctr, Richmond, VA USA
[12] Tufts Univ New England Med Ctr, Boston, MA 02111 USA
[13] Univ Fed Sao Paulo, Sao Paulo, Brazil
[14] Hosp Univ Penn, Philadelphia, PA 19104 USA
[15] Humanitas Res Hosp, Milan, Italy
[16] William Beaumont Hosp, Div Cardiol, Royal Oak, MI 48072 USA
[17] North Texas Heart Ctr, Dallas, TX USA
[18] Hosp Privado Sur, Bahia Blanca, Buenos Aires, Argentina
[19] Deutsch Herzzentrum Munich, Munich, Germany
[20] Allgemeines Krankenhaus St Georg, Hamburg, Germany
[21] Vilnius State Univ, Clin Cardiac & Vasc Dis, Vilnius, Lithuania
[22] Univ Sao Paulo, Inst Coracao, Sao Paulo, Brazil
[23] Royal Prince Alfred Hosp, Sydney, NSW, Australia
[24] Mexicos Natl Univ, Mexicos Gen Hosp, Mexico City, DF, Mexico
[25] Hirosaki Univ, Grad Sch Med, Hirosaki, Aomori, Japan
[26] Azienda Osped Univ S Maria della Misericordia Udi, Udine, Italy
[27] Cooper Univ Hosp, Camden, NJ USA
[28] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Boston, MA USA
[29] Cedars Sinai Med Ctr, Beverly Hills, CA USA
[30] Natl Heart Ctr Singapore, Singapore, Singapore
[31] CES Cardiol, Medellin, Colombia
[32] Ctr Especializados San Vicente Fdn, Medellin, Colombia
[33] CES Cardiol, Rionegro, Colombia
[34] Ctr Especializados San Vicente Fdn, Rionegro, Colombia
[35] Tel Aviv Univ, Tel Aviv Sourasky Med Ctr, IL-69978 Tel Aviv, Israel
[36] Tel Aviv Univ, Sackler Sch Med, IL-69978 Tel Aviv, Israel
[37] Chang Gung Mem Hosp, Taipei 10591, Taiwan
[38] Natl Ctr Cardiovasc Dis, Beijing, Peoples R China
[39] Peking Union Med Coll, Beijing Fu Wai Hosp, Beijing 100021, Peoples R China
[40] China Acad Med Sci, Beijing, Peoples R China