[1] Henry Ford Hlth Syst, Dept Cardiol, Detroit, MI 48202 USA
[2] Tufts Med Ctr, Dept Cardiol, Boston, MA 02111 USA
[3] St Joseph Mercy Oakland, Dept Cardiol, Pontiac, MI USA
[4] Ascens St John Hosp, Dept Cardiol, Detroit, MI USA
[5] Beaumont Hosp, Dept Cardiol, Royal Oak, MI USA
[6] St Joseph Hosp, Dept Cardiol, Orange, CA USA
[7] Ft Sanders Reg Med Ctr, Dept Cardiol, Knoxville, TN USA
[8] Washington Reg Med Ctr, Dept Cardiol, Fayetteville, AR USA
[9] Overland Pk Reg Med Ctr & Res Med Ctr, Dept Cardiol, Overland Pk, KS USA
[10] Allegheny Gen Hosp, Dept Cardiol, Pittsburgh, PA 15212 USA
[11] San Juan Reg Med Ctr, Dept Cardiol, San Juan, PR USA
[12] Northeast Georgia Med Ctr, Dept Cardiol, Gainesville, FL USA
[13] Lehigh Valley Hosp, Dept Cardiol, Allentown, PA USA
[14] Univ Tennessee, Dept Cardiol, Med Ctr, Knoxville, TN 37996 USA
[15] Northwest Med Ctr Springdale, Dept Cardiol, Springdale, UT USA
[16] INOVA Heart & Vasc Inst, Dept Cardiol, Annandale, VA USA
[17] Caril Roanoke Mem Hosp, Dept Cardiol, Roanoke, VI USA
[18] Phys Reg Med Ctr, Dept Cardiol, Knoxville, TN USA
[19] Tristar Centennial Med Ctr, Dept Cardiol, Nashville, TN USA
[20] Temple Univ Hosp & Med Sch, Dept Cardiol, Philadelphia, PA 19140 USA
[21] Mercy Fitzgerald Hosp, Dept Cardiol, Yeadon, PA USA
[22] Parkwest Med Ctr, Dept Cardiol, Knoxville, TN USA
[23] Turkey Creek Med Ctr, Dept Cardiol, Knoxville, TN USA
[24] Methodist Univ Hosp, Dept Cardiol, Memphis, TN USA
[25] Univ Nebraska, Dept Cardiol, Lincoln, NE 68583 USA
[26] Stamford Hosp, Dept Cardiol, Stamford, CT USA
[27] Loma Linda Univ, Dept Cardiol, Med Ctr, Loma Linda, CA USA
[28] North Florida Reg Med Ctr, Dept Cardiol, Gainesville, FL USA
[29] CHI Hlth Nebraska Heart, Dept Cardiol, Lincoln, NE USA
[30] Arkansas Heart Hosp, Dept Cardiol, Little Rock, AR USA
[31] Mercy Med Ctr, Dept Cardiol, Rockville, MD USA
[32] Detroit Med Ctr, Dept Cardiol, Detroit, MI USA