Author(s):
1. Nataša Trtić, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
2. Saša Marin, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
3. Valentina Veselinović, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
4. Sanja Jovičić, University of Banja Luka, Medical Faculty, Republic of Srpska, Bosnia and Herzegovina
5. Nina Zubović, Republic of Srpska, Bosnia and Herzegovina