1. Department of Cardiology and Internal Medicine, Collegium Medicum Nicolaus Copernicus University 9 Skłodowskiej‐Curie Street Bydgoszcz 85‐094 Poland
2. Department of Cardiology Marian Zyndram‐Kościałkowski Ministry of Interior and Administration Hospital Białystok Poland
3. II Department of Cardiology, Chair of Cardiology, Cardiac Surgery and Vascular Diseases Medical University of Lodz Lodz Poland
4. Department of Cardiology Hospital of the Ministry of Interior and Administration Rzeszów Poland
5. 1st Department of Cardiology, Collegium Medicum Jan Kochanowski University Kielce Poland
6. Department of Cardiology and Internal Medicine, School of Medicine, Collegium Medicum University of Warmia and Mazury Olsztyn Poland
7. Department of Cardiology and Cardiac Surgery 10th Military Hospital and Polyclinic Bydgoszcz Poland
8. Department of Cardiology Independent Public Healthcare in Przeworsk Przeworsk Poland
9. Cardiology Department Pope John Paul II District Hospital in Zamość Zamosc Poland
10. Cardiology Department Medical Care Center Jaroslaw Poland
11. Department of Cardiology and Internal Diseases, Institute of Maritime and Tropical Medicine Medical University of Gdańsk Gdynia Poland
12. Department of Cardiology Tertiary Care Hospital Ciechanów Poland
13. Department of Cardiology Masovian Rehabilitation Center “STOCER”, Dr. Włodzimierz Roefler Hospital Pruszków Poland
14. Department of Cardiology District Hospital Tuchola Poland
15. Department of Cardiology Dr. Emil Warmiński Tertiary Care Municipal Hospital Bydgoszcz Poland
16. Department of Invasive Cardiology Central Clinical Hospital of the Ministry of Interior and Administration Warsaw Poland
17. Mossakowski Medical Research Centre Polish Academy of Science Warsaw Poland
18. Department of Cardiology Polish Hospitals Kędzierzyn‐Koźle Poland
19. Department of Cardiology and Intensive Cardiac Care Unit District Polyclinic Hospital Toruń Poland
20. Department of Cardiology Medical University in Białystok Białystok Poland
21. Department of Cardiology and Cardiac Intensive Care Tertiary Care Municipal Hospital Toruń Poland
22. Cardiology Subdivision of Heart Failure St. Elizabeth Hospital Biała Poland
23. Department of Cardiology, Interventional Cardiology and Electrophysiology with Cardiac Intensive Care Unit Tertiary Care Hospital Grudziądz Poland
24. 1st Department of Physiology, Institute of Medical Sciences University of Opole, Cardiology Center of Kluczbork SCANMED SA Opole Poland
25. Department of Cardiology Polish Hospitals Sztum Poland
26. 2nd Department of Cardiology, Collegium Medicum Jagiellonian University Cracow Poland
27. Department of Cardiology Center of Postgraduate Medical Education, Grochowski Hospital Warsaw Poland
28. 3rd Department of Cardiology, Silesian Center for Heart Diseases, Faculty of Medicine in Zabrze Medical University of Silesia Zabrze Poland
29. 1st Department of Cardiology Medical University of Gdansk Gdansk Poland
30. 1st Department of Cardiology Jagiellonian University Medical College Krakow Poland
31. Department of Interventional Cardiology, Institute of Cardiology Jagiellonian University Medical College, John Paul II Hospital Krakow Poland
32. Department of Cardiology Poznan University of Medical Sciences Poznan Poland
33. Department of Heart Failure and Transplantology National Institute of Cardiology Warsaw Poland
34. Department of Coronary Artery Disease and Heart Failure, Institute of Cardiology Jagiellonian University Medical College Krakow Poland
35. Department of Preventive Medicine and Education Medical University of Gdansk Gdansk Poland
36. Department of Cardiology Pomeranian Medical University Szczecin Poland