Comenius University, Jessenius Faculty of Medicine and University Hospital in Martin, Clinic of Otorhinolaryngology, Head and Neck Surgery,, Martin, Slovak Republic
D. Durcansky
Department of Pathology, Prievidza Hospital,, Prievidza, Slovak Republic
A. Hajtman
Department of Pathology, Prievidza Hospital,, Prievidza, Slovak Republic