1. Department of Cardiology and Internal Diseases Military Institute of Medicine Szaserów Street 128 Warsaw 04‐141 Poland
2. University Center for Cardiology Gdansk Poland
3. Department of Family Medicine Medical University of Gdansk Gdansk Poland
4. Department of Heart Diseases Wroclaw Medical University Wroclaw Poland
5. Center for Heart Diseases University Hospital Wroclaw Poland
6. Department of Cardiology, Centre for Heart Diseases 4th Military Hospital Wroclaw Poland
7. Software Engineering Department, Cybernetics Faculty Military University of Technology Warsaw Poland
8. Department of Informatics Military Institute of Medicine Warsaw Poland