1. Department of Plastic Surgery, Third Faculty of Medicine, Charles University and University Hospital Královské Vinohrady, Prague, Czech Republic
2. Department of Anatomy, First Faculty of Medicine, Charles University, Prague, Czech Republic
3. Department of Anatomy, Second Faculty of Medicine, Charles University, Prague, Czech Republic
4. Department of Anaesthesia and Intensive Care Medicine, Third Faculty of Medicine, Charles University, Prague, Czech Republic
5. Department of General Surgery, Third Faculty of Medicine, Charles University and University Hospital Královské Vinohrady, Prague, Czech Republic
6. Department of Neurosurgery and Neurooncology, First Faculty of Medicine, Charles University and Military University Hospital Prague, Prague Czech Republic