Department of Otolaryngology and Head and Neck Surgery, Regional Hospital of Pardubice; Faculty of Health Studies, University of Pardubice
2.Faculty of Chemical Technology, University of Pardubice
3.Department of Otolaryngology and Head and Neck Surgery, Regional Hospital of Pardubice
4.Department of Pathology, University Hospital, Charles University, Hradec Králové, Czech Republic, Europe
5.Faculty of Health Studies, University of Pardubice