1. Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
2. Faculty of Agriculture, University of Novi Sad, Novi Sad, Serbia
3. Department of Histology and Embryology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
4. Department of Chemistry, Faculty of Science, University of Kragujevac, Kragujevac, Serbia
5. Department of Human Pathology, 1st Moscow State Medical University IM Sechenov, Moscow, Russia