1. Institute for Public Health, Center for Microbiology, National reference laboratory for Campylobacter and Helicobacter, Niš + School of Medicine, Niš
2. Institute for Public Health, Center for Microbiology, National reference laboratory for Campylobacter and Helicobacter, Niš
3. Institute for Public Health, Center for Microbiology, National reference laboratory for Campylobacter and Helicobacter, Niš + State University of Novi Pazar, Department of Biomedical Sciences, Novi Pazar