1. Department of Microbiology, Faculty of Veterinary Medicine , University of Belgrade , Belgrade , Serbia
2. Institute of Meat Hygiene and Technology , Belgrade , Serbia
3. Virology Department , Institute of Microbiology and Immunology , Faculty of Medicine , University of Belgrade , Belgrade , Serbia
4. Department of Infectious Animals Diseases and Diseases of Bees, Faculty of Veterinary Medicine , University of Belgrade , Belgrade , Serbia
5. Department of Animal Husbandary, Faculty of Agriculture , University of Bijeljina , Bosnia and Herzegovina
6. Veterinary Specialized Institute „Kraljevo“ , Kraljevo , Serbia
7. Veterinary Specialized Institute „Sombor“ , Sombor , Serbia
8. Veterinary Specialized Institute “Pančevo” , Pančevo , Serbia