1. Department of Hospital Infection Control, University Clinical Centre Kragujevac, Kragujevac, Serbia
2. Department of Clinical Pharmacology, University Clinical Centre of Kragujevac and Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
3. Department of Clinical Microbiology, University of Kragujevac Clinical Centre, Kragujevac, Serbia
4. Institute of Public Health Kragujevac, Centre for Disease Control and Prevention, Kragujevac, Serbia
5. Paediatric Clinic, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
6. Human Ecology and Ecotoxicology Laboratory, City Institute for Public Health Belgrade, Belgrade, Serbia
7. Department of Medical Microbiology, University Clinical Centre of Serbia, Belgrade, Serbia