[1] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[2] Houston Methodist DeBakey Heart & Vasc Ctr, Houston, TX USA
[3] Mayo Clin, Rochester, MN USA
[4] Univ Penn, Med Ctr, Philadelphia, PA 19104 USA
[5] St Vincent Heart Ctr Indiana, Indianapolis, IN USA
[6] Univ Michigan, Ann Arbor, MI 48109 USA
[7] Mt Sinai Sch Med, New York, NY USA