1. Department of Cardiac and Vascular Diseases, Institute of Cardiology, Jagiellonian University Medical College, 80 Prądnicka Street, Kraków, Poland
2. Centre for Rare Cardiovascular Diseases, The John Paul II Hospital, 80 Prądnicka Street, 31-202 Kraków, Poland
3. Department of Electrocardiology, Institute of Cardiology, Jagiellonian University Medical College, 80 Prądnicka Street, Kraków, Poland