1. Department of Dentistry, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
2. Department of Physiology, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
3. Department of Histology and Embryology, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia
4. Department of Pharmacology and Toxicology, Faculty of Medical Sciences , University of Kragujevac , Kragujevac , Serbia