1. IAS Pharmacy, Faculty of Medicine, University of Niš, Niš, Serbia
2. Medical Faculty of the Military Medical Academy, University of Defence in Belgrade, Belgrade, Serbia
3. Department of Physiology, Faculty of Medicine, University of Niš, Niš, Serbia
4. Department of Biology and Ecology, Faculty of Sciences and Mathematics, University of Niš, Serbia
5. Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia