Affiliation: | 1. Department of Pediatrics, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University, I. P. Pavlova 6, 775 20 Olomouc, Czech Republic;2. Department of Otorhinolaryngology, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University, I. P. Pavlova 6, 775 20 Olomouc, Czech Republic;3. Department of Surgery, Hospital of Slovak Railways and Institute of Neurobiology, Slovak Academy of Sciences, Soltesovej 4, 040 01 Kosice, Slovak Republic;4. Department of Neurosurgery, University Hospital Olomouc and Faculty of Medicine and Dentistry, Palacky University, I. P. Pavlova 6, 775 20 Olomouc, Czech Republic |