1. Faculty of Health Sciences and Physical Culture, Witelon Collegium State University, Legnica, Poland
2. Department of Cardiology, The Copper Health Centre (MCZ), Lubin, Poland
3. Department of Cardiology, Provincial Specialized Hospital in Legnica, Legnica, Poland
4. Adalbert’s Hospital, Poznan, Poland
5. Faculty of Medicine, Wroclaw Medical University, Wroclaw, Poland
6. Professional Medical Statistician, Wrocław, Poland
7. Department of Internal Medicine, Hypertension and Clinical Oncology, Wroclaw Medical University, Wroclaw, Poland
8. 1st Department of Cardiology, Poznan University of Medical Sciences, Poznan, Poland