[1] Univ Chicago, Dept Med, Sect Cardiol, Chicago, IL 60637 USA
[2] Florida Atlantic Univ, Charles & Schmidt Coll Med, Dept Integrated Med Sci, Boca Raton, FL 33431 USA
[3] Tulane Univ, Sch Med, Tulane Heart & Vasc Inst, New Orleans, LA 70112 USA
[4] Cedars Sinai Med Ctr, Barbra Streisand Womens Heart Ctr, Smidt Heart Inst, Los Angeles, CA 90048 USA
[5] Johns Hopkins Univ, Sch Med, Cicarrone Ctr Prevent Cardiovasc Dis, Baltimore, MD USA
[6] CGH Med Ctr, Sterling, IL USA
[7] Wake Forest Univ, Bowman Gray Sch Med, Sect Cardiovasc Med, Ctr Prevent Cardiovasc Dis, Winston Salem, NC USA