1. Department of Diagnostics and Public Health, University of Verona, Verona, Italy.
2. Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary.
3. Department of Clinical Microbiology, University Hospital for Infectious Diseases, Zagreb, Croatia.
4. Institute of Public Health, Bjelovar, Croatia.
5. Department of Clinical Microbiology and Hospital Infections, University Hospital Dubrava, Zagreb, Croatia.