1. DepartDepartment of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology in Katowice, 41-800 Zabrze, Polandment of Histology, Cytophysiology and Embryology, Faculty of Medicine, University of Technology in Katowice, 41-8
2. Department of Histology, Cytophysiology and Embryology, Faculty of Medicine in Zabrze, University of Technology in Katowice, Poland
3. 5th Military Clinical Hospital with the SP ZOZ Polyclinic, Krakow, Poland
4. Department of Histology, Cytophysiology and Embryology, Faculty of Medicine in Zabrze, Academy of Silesia, 40-555 Katowice, Poland
5. Department of Neurosurgery, 5th Military Clinical Hospital with the SP ZOZ Polyclinic in Krakow, 30-901 Krakow, Poland