1. Department of Microbiology, School of Medicine, University of Zagreb, Zagreb, Croatia.
2. Department of Clinical and Molecular Microbiology, Clinical Hospital Center Zagreb, Zagreb, Croatia.
3. Department for Sanitary Engineering, Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia.
4. Department of Microbiology, Public Health Institute of Istria County, Pula, Croatia.
5. Institute for Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, Graz, Austria.
6. Department of Surgery, Clinical Hospital Center Zagreb, Zagreb, Croatia.