[1] Univ Oklahoma, Div Internal Med, Hlth Sci Ctr, Oklahoma City, OK USA
[2] Univ Oklahoma, Dept Med, Hlth Sci Ctr, Oklahoma City, OK USA
[3] West Virginia Univ, Heart & Vasc Inst, Div Cardiovasc Med, Morgantown, WV USA
[4] Univ Calif Davis, Div Internal Med, Sacramento, CA USA
[5] Kansas City Heart Rhythm Inst, Div Cardiol, Overland Pk, KS USA
[6] MercyOne, North Iowa Med Ctr, Div Cardiovasc Med, Mason City, IA USA
[7] Univ Calif Davis, Div Cardiovasc Med, Sacramento, CA USA
[8] Rochester Gen Hosp, Div Internal Med, Rochester, NY USA
[9] Mayo Clin, Sect Cardiac Electrophysiol, Div Cardiovasc Med, Rochester, MN USA