[1] Univ Massachusetts, Sch Med, Dept Med, Div Cardiovasc Med, Worcester, MA 01655 USA
[2] Royal Infirm Edinburgh NHS Trust, Dept Cardiol, Edinburgh, Midlothian, Scotland
[3] Univ Michigan, Hlth Syst, Ann Arbor, MI 48109 USA
[4] Hop Bichat Claude Bernard, Serv Cardiol, F-75877 Paris, France
[5] Univ Perugia, Inst Internal & Vasc Med, I-06100 Perugia, Italy
[6] Hosp Albert Einstein, CTI A, Coronary Care Unit, Sao Paulo, Brazil
[7] Concord Hosp, Concord, Australia
[8] Grochowski Hosp, Postgrad Med Sch, Dept Cardiol, Warsaw, Poland
[9] Brigham & Womens Hosp, Div Cardiovasc, Boston, MA 02115 USA
[10] Univ Massachusetts, Sch Med, Dept Med, Worcester, MA USA
[11] Univ Toronto, Canadian Heart Res Ctr, Div Cardiol, Toronto, ON, Canada
[12] Humboldt Univ, Hosp Charite, Dept Cardiol Emergency & Crit Care Med, Franz Volhard Clin, Berlin, Germany
[13] Duke Univ, Med Ctr, Durham, NC 27706 USA
[14] Hoag Mem Hosp, Dept Cardiol, Newport Beach, CA USA
[15] Univ Buenos Aires, Inst Biomed Sci, Buenos Aires, DF, Argentina
[16] Hosp Univ Gregorio Maranon, Dept Cardiol, Madrid, Spain
[17] Graz Univ, Med Klin, Klin Abt Kardiol, A-8036 Graz, Austria
[18] CHU Pitie Salpetriere, Serv Cardiol, Paris, France
[19] Univ Hosp Gasthuisberg, B-3000 Louvain, Belgium
[20] Univ Massachusetts, Sch Med, Ctr Outcomes Res, Worcester, MA USA
[21] Aventis Pharmaceut Inc, Bridgewater, NJ USA