1. Faculty of Medicine, J.J. Strossmayer University of Osijek, 31 000 Osijek, Croatia
2. Faculty of Health Studies, University of Mostar, 88 000 Mostar, Bosnia and Herzegovina
3. School of Medicine, University of Mostar, 88 000 Mostar, Bosnia and Herzegovina
4. Faculty for Dental Medicine and Health, J.J. Strossmayer University of Osijek, 31 000 Osijek, Croatia
5. University Hospital Centre, 31 000 Osijek, Croatia