1. Department of Invasive Cardiology Centre of Postgraduate Medical Education Warsaw Poland
2. Department of Cardiology and Internal Medicine Medical Faculty University of Warmia and Mazury Olsztyn Poland
3. Department of Invasive Cardiology Central Clinical Hospital of the Ministry of Interior and Administration Warsaw Poland
4. Costa del Sol Hospital Marbella Spain
5. Department of Invasive Cardiology Medical University in Bialystok Bialystok Poland
6. Alexandrovska University Hospital Sofia Bulgaria