1. Silesian Center for Heart Diseases (SCHD), 3rd Depatment of Cardiology, Medical University of Silesia, Zabrze, Poland
2. Grochowski Hospital, Department of Cardiology, Medical Centre of Postgraduate Education, Warsaw, Poland
3. Institute of Cardiology, Department of Interventional Cardiology and Angiology, Warsaw, Poland
4. Upper Silesian Cardiology Center, 3rd Department of Cardiology, Katowice, Poland
5. Jagiellonian University Medical College, Second Department of Cardiology, Institute of Cardiology,, Krakow, Poland