1. 2nd Department of Cardiology, Medical University of Silesia in Katowice, School of Medicine with the Division of Dentistry in Zabrze, Poland
2. Faculty of Medicine and Health Sciences, The Jan Kochanowski University, Kielce, Poland
3. 2nd Department of Cardiology, Swietokrzyskie Cardiology Center, Kielce, Poland
4. Acute Cardiac Care Unit, Swietokrzyskie Cardiology Center, Kielce, Poland
5. Department of Cardiology, Medical University, Lublin, Poland