1. 1 University of East Sarajevo, Faculty of Medicine Foca , Department of Dentistry , Bosnia and Herzegovina
2. 2 University of Pristina, Faculty of Medicine , Department of Histology and Embryology , Serbia
3. 3 University of East Sarajevo, Faculty of Medicine Foca , Department of Surgery , Bosnia and Herzegovina
4. 4 University of East Sarajevo, Faculty of Medicine Foca , Department of Microbiology , Bosnia and Herzegovina
5. 5 Special clinic for plastic, reconstructive and aesthetic surgery Varis , Belgrade , Serbia