Author(s):
1. Dejan Pejić, JZU Bolnica Gradiška, Republic of Srpska, Bosnia and Herzegovina
2. Barbara Stanimirović, klinicki centar republike srpske, Republic of Srpska, Bosnia and Herzegovina
3. Jelena Mrđa, klinicki centar republike srpske, Republic of Srpska, Bosnia and Herzegovina
4. Božana Galić Pejić, JZU Dom zdravlja Banja Luka , Republic of Srpska, Bosnia and Herzegovina