1. 2nd Department of Radiology, Medical University of Gdansk, Gdańsk, Poland
2. Department of Economic Sciences, Faculty of Management and Economics, Gdansk University of Technology, Gdańsk, Poland
3. Department of Human Physiology, Medical University of Gdansk, Gdańsk, Poland
4. Department of Cardiovascular Surgery, Medical University of Gdansk, Gdańsk, Poland
5. 1-st Department of Radiology, Medical University of Gdansk, Gdańsk, Poland
6. Department of Neurosurgery, Medical University of Gdansk, Gdańsk, Poland
7. Department of Diagnostic Imaging, Medical University of Warsaw, Warsaw, Poland
8. Faculty of Health Sciences, Pomeranian University of Slupsk, Słupsk, Poland