1. Department of Hygiene, Wroclaw Medical University, Wrocław, Poland;
2. Department of Radiology and Diagnostic Imaging, 4th Military Hospital, Wroclaw, Poland;
3. Department of Pathophysiology, Wroclaw Medical University, Wroclaw, Poland;
4. Department of Geriatrics, Wroclaw Medical University, Wroclaw, Poland;
5. Department of Internal Medicine, Occupational Diseases and Hypertension, Wroclaw Medical University, Wroclaw, Poland