1. , , ,
2. Department of Biochemistry, Faculty of Medicine in Zabrze, Academy of Silesia, Katowice, Poland
3. Individual Specialist Medical Practice Anna Michalska-Bańkowska, Czeladź, Poland
4. Individual Specialist Medical Practice Mirosław Bańkowski, Czeladź, Poland
5. Department of Histology, Cytophysiology and Embryology, Faculty of Medicine in Zabrze, Academy of Silesia, Katowice, Poland