[1] Un Texas, Texas Cardiac Arrhythmia Inst, St David Med Ctr, Austin, TX USA
[2] Univ Foggia, Austin, TX USA
[3] St David Med Ctr, Texas Cardiac Arrhythmia Inst, Austin, TX USA
[4] Metro Hlth Hosp, Cleveland, OH USA
[5] Sutter Pacific Hosp, San Francisco, CA USA