[1] Rochester Gen Hosp, Sands Constellat Heart Inst, Rochester, NY 14621 USA
[2] Thomas Jefferson Univ Hosp, Dept Cardiovasc Med, Philadelphia, PA USA
[3] West Virginia Univ, Heart & Vasc Inst, Div Cardiovasc Med, Morgantown, WV USA
[4] Dow Med Coll, Dept Med, Karachi, Pakistan
[5] New York Med Coll, Divi s Cardiovasc Med, Westchester Med Ctr, New York, NY USA
[6] Baylor Coll Med, Div Cardiol, Houston, TX USA
[7] Detroit Med Ctr, Div Cardiol, Detroit, MI USA
[8] Mayo Clin, Div Intervent Cardiol, Rochester, MN USA