1. Department of Otorhinolaryngology, Faculty of Medicine, University of Ljubljana, Vrazov Trg 2, 1000 Ljubljana, Slovenia
2. Department of Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre Ljubljana, Zaloška 2, 1000 Ljubljana, Slovenia
3. Department of Neurosurgery, University Medical Centre Ljubljana, Zaloška 2, 1000 Ljubljana, Slovenia
4. Department of Surgery, Faculty of Medicine, University of Ljubljana, Vrazov Trg 2, 1000 Ljubljana, Slovenia
5. Department of Radiology, University Medical Centre Ljubljana, Zaloška 2, 1000 Ljubljana, Slovenia
6. Medilab Diagnostic Imaging, Vodovodna 100, 1000 Ljubljana, Slovenia
7. Department of Diagnostic and Interventional Radiology, General Hospital Slovenj Gradec, Gosposvetska Cesta 1, 2380 Slovenj Gradec, Slovenia