[1] St Lukes Med Ctr, Phoenix Heart Ctr, Phoenix, AZ 85016 USA
[2] Beth Israel Hosp, Boston, MA USA
[3] St Francis Hosp, Roslyn, NY USA
[4] Utah Valley Cardiol, Provo, UT USA
[5] No Calif Med Assoc, Santa Rosa, CA USA
[6] Cleveland Clin, Cleveland, OH 44106 USA
[7] Mercy Med Ctr, Des Moines, IA USA
[8] William Beaumont Hosp, Royal Oak, MI 48072 USA
[9] Stanford Univ, Ctr Med, Stanford, CA 94305 USA
[10] Lenox Hill Hosp, New York, NY 10021 USA