Author(s):
1. Radmila Arbutina, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
2. Nataša Trtić, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
3. Ognjenka Janković, Republic of Srpska, Bosnia and Herzegovina
4. Vladan Mirjanić, Medicinski fakultet Banja Luka , Republic of Srpska, Bosnia and Herzegovina
5. Valentina Veselinović, Republic of Srpska, Bosnia and Herzegovina