1. Doctoral School, Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Silesian Center for Heart Diseases, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
2. Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Medical University of Silesia, 40-055 Katowice, Poland
3. Department of Cardiac, Vascular and Endovascular Surgery and Transplantology, Silesian Center for Heart Diseases, Maria Skłodowska—Curie 9 Street, 41-800 Zabrze, Poland
4. Department of Cardiac Transplantation and Mechanical Circulatory Support, Silesian Center for Heart Diseases, Maria Skłodowska—Curie 9 Street, 41-800 Zabrze, Poland
5. Department of Cardiology, Silesian Centre for Heart Diseases, 41-800 Zabrze, Poland
6. 2nd Department of Cardiology, Medical University of Silesia, Katowice Poland, Spec. Hospital, 41-808 Zabrze, Poland