[1] Univ Virginia, Charlottesville, VA USA
[2] St Elizabeths Med Ctr, Brighton, MA USA
[3] Penrose St Francis Hosp, Colorado Springs, CO USA
[4] Northeast Georgia Phys Grp, Gainesville, GA USA
[5] Gulf Coast Cardiothorac & Vasc Surg, Ft Myers, FL USA
[6] Holy Spirit Northside Hosp, Chermside, Australia
[7] Abbott NW Hosp, Minneapolis Heart Inst, Minneapolis, MN USA
[8] NYU, Sch Med, New York, NY USA
[9] Temple Univ, Philadelphia, PA 19122 USA
[10] Penn Presbyterian Med Ctr, Philadelphia, PA USA
[11] East Bay Cardiac Surg Ctr, Oakland, CA USA
[12] Swedish Heart & Vasc Inst, 1600 E Jefferson,Suite 110, Seattle, WA 98122 USA
[13] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA
[14] Emory St Josephs Hosp, Atlanta, GA USA
[15] St Thomas Hosp, Nashville, TN USA
[16] Heart Hosp Baylor Plano, Plano, TX USA
[17] Weill Cornell Med Coll, New York Presbyterian Hosp, New York, NY USA
[18] South Florida Heart & Lung Inst, Doral, FL USA
[19] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA
[20] TriHlth Heart Inst, Cincinnati, OH USA
[21] Cent Maine Heart & Vasc Inst, Lewiston, ME USA
[22] Lankenau Med Ctr, Wynnewood, PA USA
[23] Princeton Baptist Hosp, Dept Cardiothorac Surg, Birmingham, AL USA