1. Study of Dental Medicine, School of Medicine, University of Mostar, 80000 Mostar, Bosnia and Herzegovina
2. Health Care Center Mostar, 80000 Mostar, Bosnia and Herzegovina
3. Health Care Center Prozor-Rama, 88440 Prozor-Rama, Bosnia and Herzegovina
4. Faculty of Economics, University of Mostar, 88000 Mostar, Bosnia and Herzegovina
5. School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia