[1] Hosp Univ & Politecn La Fe, Valencia, Spain
[2] Ctr Invest Biomed RED Enfermedades Cardiovasc CIBE, Madrid, Spain
[3] Univ Calif Los Angeles UCLA, Cardiac Arrhythmia Ctr, Los Angeles, CA USA
[4] Ahmanson UCLA Adult Congenital Heart Dis Ctr, Los Angeles, CA USA
[5] UCLA Hlth Syst, David Geffen Sch Med, Dept Pediat, Div Pediat Cardiol, Los Angeles, CA USA