Author(s):
1. Veljko Ilic, 'Stomatoloski fakultet Univerzitet u Beogradu, Serbia
2. Djorđe Antonijević, Department of histology, Faculty of Dentistry, University of Belgrade, Serbia
3. Sanja Milutinovic-Smiljanic, Serbia
4. Vesna Danilovic, Serbia
5. Vladimir Biočanin, Stomatoloski fakultet, Pančevo, Serbia
6. Dragan Ilić, Department of histology, Faculty of Dentistry, University of Belgrade, Serbia