Affiliation: | 1. Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Center Osijek, J. Huttlera 4, 31 000, Osijek, Croatia 2. Department of Otorhinolaryngology and Head and Neck Surgery, University Hospital Center Zagreb, Zagreb, Croatia 3. Institute for Pathology and Forensic Medicine, University Hospital Center Osijek, Osijek, Croatia 4. Clinic for Pediatrics, University Hospital Center Osijek, Osijek, Croatia 5. Institute of Public Health for the Osijek-Baranja County, Osijek, Croatia
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