[1] Brigham & Womens Hosp, Heart & Vasc Ctr, 75 Francis St, Boston, MA 02115 USA
[2] Harvard Med Sch, Boston, MA 02115 USA
[3] Emory Univ, Sch Med, Emory Clin Cardiovasc Res Inst, Atlanta, GA USA
[4] Duke Univ, Med Ctr, Duke Clin Res Inst, Durham, NC USA
[5] Duke Univ, Med Ctr, Div Cardiol, Durham, NC 27710 USA
[6] Univ Calif Los Angeles, Ahmanson UCLA Cardiomyopathy Ctr, Los Angeles, CA USA
[7] Minneapolis VA Hlth Care Syst, Ctr Care Delivery & Outcomes Res, Minneapolis, MN USA
[8] Univ Minnesota, Minneapolis, MN USA
[9] Vanderbilt Heart & Vasc Inst, Nashville, TN USA
[10] Amer Heart Assoc, Dallas, TX USA
[11] Inova Heart & Vasc Inst, Falls Church, VA USA
[12] Univ Mississippi, Dept Med, Jackson, MS 39216 USA