1. Third Department of Cardiology, Medical University of Silesia
2. Krakow Cardiovascular Research Institute
3. Department of Cardiology, School of Health Sciences, Medical University of Silesia
4. First Department of Cardiology, Medical University of Silesia
5. Jagiellonian University Medical College, Institute of Cardiology
6. Center for Interventional Vascular Therapy, Division of Cardiology, Presbyterian Hospital and Columbia University
7. Cardiovascular Research Foundation