1. Department of Bacteriology, Faculty of Medicine, Institute of Microbiology and Immunology, University of Belgrade, Belgrade, Serbia.
2. Center for Microbiology, Institute of Public Health of Serbia “Dr. Milan Jovanović Batut,” Belgrade, Serbia.
3. Department of Tropical Diseases, Clinical Centre of Serbia, Clinic of Infectious and Tropical Diseases, Belgrade, Serbia.
4. Department of Microbiology and Immunology, Faculty of Medicine, University of Banja Luka, Banjaluka, Bosnia and Herzegovina.