[1] Harvard Univ, Brigham & Womens Hosp, Sch Med, Boston, MA 02115 USA
[2] Bristol Myers Squibb Pharmaceut Res Inst, Pennington, NJ USA
[3] Tufts Univ New England Med Ctr, Boston, MA USA
[4] Brookdale Univ Hosp, Brooklyn, NY USA
[5] Ctr Med, Brooklyn, NY USA
[6] Vanderbilt Univ, Coll Med, Nashville, TN USA
[7] Univ Montreal, Montreal, PQ, Canada
[8] Univ Colorado, Sch Med, Denver, CO 80202 USA
[9] Rush Presbyterian St Lukes Med Ctr, Chicago, IL 60612 USA
[10] Univ Texas, Hlth Sci Ctr, Div Cardiol, Houston, TX USA