Author(s):
1. Stojko Vidovic, Medicinski fakultet Banja Luka ,
Republic of Srpska, Bosnia and Herzegovina
2. Jelena Bećarević , Medicinski fakultet Banja Luka ,
Republic of Srpska, Bosnia and Herzegovina
3. Vanja Vidović, Medicinski fakultet Banja Luka ,
Republic of Srpska, Bosnia and Herzegovina