1. Department of Internal Medicine and Gerontology, Jagiellonian University Medical College, Krakow, Poland;
2. Department of Cardiology, Medical University of Warsaw, Warsaw, Poland;
3. Department of Preventive Medicine and Education, Medical University of Gdansk, Gdansk, Poland;
4. Department of Family Medicine, Jagiellonian University Medical College, Krakow, Poland;
5. Department of Pharmacoeconomics, Medical University of Warsaw, Warsaw, Poland;
6. Business School, Warsaw University of Technology, Warsaw, Poland;
7. Department of Cardiology, Jagiellonian University Medical College and University Hospital, Krakow, Poland;
8. Department of Heart Failure and Transplantology, Institute of Cardiology, Warsaw, Poland