[1] Northwestern Univ, Ctr Cardiovasc Qual & Outcomes, Feinberg Sch Med, Dept Med, 645 N Michigan Ave,Suite 1006, Chicago, IL 60611 USA
[2] Duke Clin Res Inst Durham, Durham, NC USA
[3] Northwestern Univ, Ctr Cardiovasc Qual & Outcomes, Feinberg Sch Med, Dept Emergency Med, Chicago, IL 60611 USA
[4] Univ N Carolina, Sch Med, Dept Med, Chapel Hill, NC USA
[5] Univ N Carolina, Sch Med, Dept Radiol, Chapel Hill, NC 27514 USA
[6] Univ Hull, Dept Cardiol, Castle Hill Hosp, Kingston Upon Hull, Yorks, England
[7] Momentum Res Inc, Durham, NC USA
[8] Univ Bergen, Inst Internal Med, Bergen, Norway
[9] Univ Athens, Hosp Attikon, Athens, Greece
[10] David Geffen UCLA, Med Ctr, Ahmanson UCLA Cardiomyopathy Ctr, Los Angeles, CA USA
[11] Univ Calif San Diego, San Diego, CA 92103 USA
[12] Duke Univ, Sch Med, Duke Clin Res Inst, Durham, NC USA
[13] Univ Paris 06, AP HP, Paris, France
[14] Tufts Med Ctr, Ctr Cardiovasc, Boston, MA USA
[15] Tufts Univ, Sch Med, Boston, MA 02111 USA
[16] Univ Toronto, Toronto Gen Hosp, Inst Circulatory & Resp Hlth, Canadian Inst Hlth, Toronto, ON M5S 1A1, Canada
[17] ANMCO Res Ctr, Florence, Italy
[18] Univ Calif San Francisco, Div Cardiol, San Francisco Vet Affairs Med Ctr, San Francisco, CA 94143 USA
[19] Univ Glasgow, BHF Cardiovasc Res Ctr, Glasgow, Lanark, Scotland
[20] Univ Maryland, Sch Med, Baltimore, MD 21201 USA
[21] Univ & Civil Hosp Brescia, Dept Expt & Appl Med, Brescia, Italy
[22] Feinberg Sch Med, Div Cardiol, Chicago, IL USA
[23] Duke Univ, Med Ctr, Duke Heart Ctr, Div Clin Pharmacol, Durham, NC 27710 USA
[24] Case Western Reserve Univ, Cleveland, OH 44106 USA
[25] Med Univ, Fac Hlth Sci, Clin Mil Hosp, Wroclaw, Poland
[26] Henry Ford Hosp, Dept Med, Detroit, MI 48202 USA
[27] Vet Affairs Med Ctr, San Francisco, CA 94121 USA
[28] Tufts Med Ctr, Div Cardiol, Boston, MA USA
[29] Baylor Heart & Vasc Inst, Dallas, TX USA
[30] Nancy Univ, Dept Cardiol, Nancy, France