1. Department of Pathophysiology, Faculty of Medicine; University of Belgrade; Belgrade Serbia
2. Laboratory for Cellular Physiology, Institute of Medical Physiology, Faculty of Medicine; University of Belgrade; Belgrade Serbia
3. Institute of Histology and Embryology “Aleksandar Đ. Kostić”, School of Medicine; University of Belgrade; Belgrade Serbia
4. General and Oral Histology and Embryology, Faculty of Dentistry; University of Belgrade; Belgrade Serbia