Author(s):
1. Aleksandra Šmitran, University of Banja Luka, Medical Faculty,
Republic of Srpska, Bosnia and Herzegovina
2. Dragana Gajic,
Republic of Srpska, Bosnia and Herzegovina
3. Ljiljana Bozic,
Republic of Srpska, Bosnia and Herzegovina
4. Dijana Jelić, Medicinski fakultet Banja Luka ,
Republic of Srpska, Bosnia and Herzegovina