1. Department of Public Health, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 976/3, 775 15 Olomouc, Czech Republic
2. Department of Surgery, Military Hospital Olomouc, Sušilovo Náměstí 5, 771 11 Olomouc, Czech Republic
3. Department of Biophysics, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 976/3, 775 15 Olomouc, Czech Republic