1. Department of Pathological Anatomy, University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic.
2. Department of Surgery, Pavol Jozef Šafárik University and Košice-Šaca Hospital, Košice, Slovak Republic.
3. Department for Biomedical Research, East-Slovak Institute of Cardiovascular Diseases, Košice, Slovak Republic.
4. Second Department of Surgery, Pavol Jozef Šafárik University and Louise Pasteur University Hospital, Košice, Slovak Republic.
5. Department of Heart Surgery, Pavol Jozef Šafárik University and East-Slovak Institute of Cardiovascular Diseases, Košice, Slovak Republic.
6. Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovak Republic.
7. Centre for Evidence Based Practice, Bergen University College, Bergen, Norway.
8. Institute of Anatomy, First Faculty of Medicine, Charles University, Prague, Czech Republic.
9. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway.