1. Department of Neurosurgery, 5th Military Clinical Hospital with the SP ZOZ Polyclinic in Cracow, Cracow, Poland
2. Department of Histology, Cytophysiology, and Embryology, Faculty of Medicine in Zabrze, Academy of Silesia, Zabrze, Poland
3. Department of Physiology, School of Medicine in Katowice, Medical University of Silesia, Katowice, Poland