1. Faculty of Health Science and Physical Culture Witelon Collegium State University Legnica Poland
2. Department of Cardiology, Provincial Specialized Hospital in Legnica Legnica Poland
3. Department of Cardiology, The Copper Health Centre (MCZ) Lubin Poland
4. Clinical Department of Internal and Occupational Diseases, Hypertension and Clinical Oncology Wroclaw Medical University Wrocław Poland
5. 1st Department of Cardiology Poznan University of Medical Sciences Poznań Poland