1. Department of Microbiology and Immunology; School of Dental Medicine, University of Belgrade; Belgrade 11000 Serbia
2. Department of Pharmacy; University “G. d'Annunzio” Chieti-Pescara; Chieti 66100 Italy
3. Department of Medical; Oral, and Biotechnological Sciences, University “G. d'Annunzio” Chieti-Pescara; Chieti 66100 Italy