1. Institute for Animal Husbandry, Beograd–Zagreb , Autoput 16, Belgrade-Zemun , Serbia
2. Department of Biology, Faculty of Veterinary Medicine , University of Belgrade , Bul. Oslobodjenja 18, Belgrade , Serbia
3. Institute of Veterinary Medicine of Serbia , Vojvode Toze 14, Belgrade , Serbia
4. Department of Veterinary Medicine, Faculty of Agriculture , University of Novi Sad , D. Obradovic square 8, Novi Sad , Serbia
5. Department of Statistics, Faculty of Agriculture , University of Belgrade , Nemanjina 6, Belgrade-Zemun , Serbia
6. Patent Co. DOO, Vlade Ćetkovića 1a, Mišićevo , Serbia