1. Department of Cardiology, School of Health Sciences, Medical University of Silesia, Katowice, Poland.
2. First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Cracow, Poland.
3. Department of Diagnostic Imaging, City Hospital, Chorzów, Poland.
4. Health Promotion and Obesity Management Unit, Department of Pathophysiology, Medical School in Katowice, Medical University of Silesia, Katowice, Poland.