Author(s):
1. Ognjenka Janković, Republic of Srpska, Bosnia and Herzegovina
2. Smiljana Paraš, Republic of Srpska, Bosnia and Herzegovina
3. Radmila Arbutina, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
4. Irena Kuzmanović Radman, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
5. Tijana Adamović, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
6. Valentina Veselinović, University of Banja Luka, Medical Faculty, Republic of Srpska, Bosnia and Herzegovina
7. Vladan Mirjanić, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina