1. Department of OtorhinolaryngologyCounty General and Veterans Hospital Vukovar Vukovar Croatia
2. Department of Otorhinolaryngology and Maxillofacial Surgery, Department of NeurologyMedical Faculty, University of Osijek Osijek Croatia
3. Department of NeurologyMedical Faculty, University of Osijek Osijek Croatia
4. Department of Neurology Clinical Hospital Center Osijek Osijek Croatia