1. Division of Cardiovascular Surgery, Andrzej Frycz Modrzewski Krakow University, Bielsko-Biała, Poland
2. Department of Cardiac Surgery, American Heart of Poland, Bielsko-Biała, Poland
3. Department of Cardiac Surgery, Academy of Silesia, Katowice, Poland
4. Center for Cardiovascular Research and Development, American Heart of Poland, Katowice, Poland
5. Department of Cardiology, Andrzej Frycz Modrzewski Krakow Univeristy, Krakow, Poland
6. Department of Cardiology, American Heart of Poland, Bielsko- Biala, Poland
7. Department of Cardiology, Academy of Silesia, Katowice, Poland
8. American Heart of Poland, Katowice, Poland