[1] Univ Michigan, Ctr Cardiovasc, Ann Arbor, MI 48109 USA
[2] Duke Univ, Durham, NC USA
[3] Massachusetts Gen Hosp, Boston, MA 02114 USA
[4] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[5] NHLBI, Bethesda, MD 20892 USA
[6] George Washington Univ, Med Ctr, Washington, DC 20037 USA
[7] Johns Hopkins Univ, Sch Med, Baltimore, MD USA
[8] Univ Calif San Francisco, San Francisco, CA 94143 USA
[9] Columbia Coll Phys & Surg, New York, NY USA
[10] Ochsner Clin Fdn, New Orleans, LA USA
[11] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA
[12] Univ Washington, Med Ctr, Seattle, WA 98195 USA
[13] Brigham & Womens Hosp, Boston, MA 02115 USA
[14] Univ Florida, Coll Med, Gainesville, FL USA
[15] Emory Univ, Atlanta, GA 30322 USA
[16] Univ N Carolina, Chapel Hill, NC USA