1 Student Scientific Circle at the Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Silesian Center of Heart Diseases, Zabrze, Poland.
2 Department Of Cardiology, Congenital Heart Diseases And Electrotherapy, Silesian Center For Heart Diseases, Zabrze, Poland.
3 School Of Medicine With The Division Of Dentistry, Zabrze, Medical University Of Silesia, Katowice, Poland, Department Of Cardiology, Silesian Center For Heart Diseases, Zabrze, Poland.