[1] Henry Ford Hosp, Div Cardiovasc Med, 6525 Second Ave, Detroit, MI 48202 USA
[2] Duke Univ, Sch Med, Div Cardiol, Durham, NC USA
[3] Bloomsburg Univ, Dept Exercise Sci, Bloomsburg, PA USA
[4] Montefiore Med Ctr, Albert Einstein Coll Med, 111 E 210th St, Bronx, NY 10467 USA
[5] NHLBI, Div Cardiovasc Sci, Bldg 10, Bethesda, MD 20892 USA
[6] Cleveland Clin, Dept Cardiovasc Med, Cleveland, OH 44106 USA
[7] Ronald Regan UCLA Med Ctr, Ahmanson UCLA Cardiomyopathy Ctr, Los Angeles, CA USA
[8] Cone Hlth, Div Cardiol, Greensboro, NC USA
[9] Univ Hosp Case Med Ctr, Cleveland, OH USA
[10] St Vincent Heart Ctr Indiana, Indianapolis, IN USA
[11] Washington Univ, Sch Med, Div Cardiol, St Louis, MO USA
[12] Johns Hopkins Univ Hosp, Div Cardiol, Baltimore, MD 21287 USA