[1] UZ Leuven, Dept Cardiovasc Sci, Paediat Cardiol, Leuven, Belgium
[2] King Faisal Specialist Hosp & Res Ctr, Heart Ctr, Dept Paediat Cardiol Paediat Heart Failure & Card, Riyadh, Saudi Arabia
[3] Univ Hosp Schleswig Holstein, Dept Congenital Heart Dis & Paediat Cardiol, Kiel, Germany
[4] Vilnius Univ, Inst Clin Med, Vilnius, Lithuania
[5] Univ Barcelona, Hosp St Joan Deu, Arrhythmia Inherited Cardiac Dis & Sudden Death, Barcelona, Spain
[6] Univ Girona, Sch Med, Med Sci Dept, Girona, Spain
[7] Ist Policlin San Donato, Dept Paediat Cardiol, Milan, Italy
[8] Childrens Mem Hlth Inst, Cardiol Dept, Warsaw, Poland
[9] Childrens Mem Hlth Inst, Cardiovasc Intervent Lab, Warsaw, Poland
[10] Med Univ, Dept Pediat Cardiol Pulmol Allergol & Cyst Fibros, Innsbruck, Austria
[11] Univ Padua, Paediat Cardiac Unit, Dept Paediat, Padua, Italy