1. Public Institution Veterinary Institute of Republic of Srpska “Dr. Vaso Butozan”, Branka Radičevića 18, 78 000 Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. Department of Microbiology and Immunology, Faculty of Medicine, University of Banja Luka, Save Mrkalja 14, 78 000 Banja Luka, Republic of Srpska, Bosnia and Herzegovina