1. Centre for Biomedical Research, Faculty of Medicine, University of Banja Luka, Banja Luka, The Republic of Srpska 78000, Bosnia and Herzegovina
2. Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Belgrade, Belgrade 11 000, Serbia
3. Department of Pharmacology, Toxicology and Clinical Pharmacology, Faculty of Medicine, University of Banja Luka, Banja Luka, The Republic of Srpska, 78000, Bosnia and Herzegovina