[1] Tristar Centennial Med Ctr, Centennial Heart, 2400 Patterson St Ste 502, Nashville, TN 37203 USA
[2] Cleveland Clin Fdn, Heart Vasc & Thorac Inst, Dept Cardiovasc Med, Cleveland, OH USA
[3] Vanderbilt Univ, Div Cardiovasc Dis, Med Ctr, Nashville, TN USA
[4] Inova Heart & Vasc Inst, Inova Fairfax Med Ctr, Falls Church, VA USA