1. 1st Clinic of Cardiology and ElectrotherapySwietokrzyskie Cardiology CentreKielce Poland
2. Faculty of Medical and Health SciencesThe Jan Kochanowski UniversityKielce Poland
3. Faculty of Mathematics and Natural SciencesThe Jan Kochanowski UniversityKielce Poland
4. 1st Chair and Department of CardiologyMedical University of WarsawWarsaw Poland
5. Department of Cardiology and Internal DiseasesMilitary Institute of MedicineWarsaw Poland