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Author(s):
1. Jovan Vojinović, University Business Academy Novi Sad, Faculty of Dental Medicine in Pancevo,
Republic of Srpska, Bosnia and Herzegovina
2. Milica Gajic, University Business Academy Novi Sad, Faculty of Dental Medicine in Pancevo, Serbia
3. Katarina Kalevski, University Business Academy Novi Sad, Faculty of Dental Medicine in Pancevo, Serbia
4. Đorđe Mirjanić, JZU Dom zdravlja Banja Luka ,
Republic of Srpska, Bosnia and Herzegovina