1. Faculty of Dental Medicine, Department of Prosthetic Dentistry, University of Belgrade, Belgrade, Serbia
2. Faculty of Dental Medicine, Department of Oral Surgery, University of Belgrade, Belgrade, Serbia
3. Faculty of Dental Medicine, Department of Pharmacology in Dentistry, University of Belgrade, Belgrade, Serbia
4. Faculty of Dental Medicine, Department of Restorative Odontology and Endodontics, University of Belgrade, Belgrade, Serbia