1. Department of Cardiology; Medical Center for Postgraduate Education; Grochowski Hospital; Warsaw
2. ELMedica EP-Network; Kielce
3. Podkarpackie Center for Cardiovascular Interventions; Sanok
4. Carint Medica; Kraków
5. Division of Interventional Cardiology; Center of Invasive Cardiology, Angiology and Electrotherapy in Ostrowiec; Poland
6. Department of Cardiology and Pediatric Cardiology; Research and Development Center; Wrovasc Voivodship's Specialist Hospital Wroclaw
7. Institute of Physics; Department of Atomic Physics, Jan Kochanowski University; Kielce
8. Department of Cardiology; Specialist Hospital; Tarnow
9. Department of Pediatric Cardiology; Silesian Medical University; Katowice Poland