1. ‘Club 30’ Polish Cardiac Society Warsaw Poland
2. First Department of Cardiology, School of Medicine in Katowice Medical University of Silesia Katowice Poland
3. Members of the European Reference Network on Heart diseases ‐ ERN GUARD‐HEART Amsterdam Netherlands
4. 1st Chair and Department of Cardiology Medical University of Warsaw Warsaw Poland
5. Department of Cardiology Maastricht University Medical Centre and Cardiovascular Research Institute Maastricht Maastricht The Netherlands
6. Institute of Pharmacology, West German Heart and Vascular Centre University of Duisburg‐Essen Duisburg Germany
7. Department of Cardiology and Internal Diseases Military Institute of Medicine Warsaw Poland
8. 1st Clinic of Cardiology and Electrotherapy, Swietokrzyskie Cardiology Centre; Collegium Medicum The Jan Kochanowski University Kielce Poland
9. Department of Cardiology and Electrotherapy Medical University of Gdańsk Gdańsk Poland
10. Department of Cardiology Medical University of Lublin Lublin Poland
11. Clinical Department of Cardiology Nowa Sól Multidisciplinary Hospital Nowa Sól Poland
12. University of Zielona Góra Zielona Góra Poland
13. Department of Cardiology St Vincent de Paul Hospital Gdynia Poland
14. 1st Department of Cardiology Medical University of Gdansk Gdańsk Poland
15. Department of Heart Diseases Postgraduate Medical School Warsaw Poland
16. Department of Cardiology, School of Health Sciences Medical University of Silesia Katowice Poland
17. Department of Cardiology Medical University of Lódż Łódź Poland
18. Department of Cardiology Medical University of Białystok Białystok Poland
19. Department of Cardiology and Internal Medicine Medical University of Gdańsk Gdynia Poland
20. Department of Biology and Lipid Disorders Poznań University of Medical Sciences Poznań Poland