Authors
D. Pazardzhikliev
Department of Otorhinolaryngology, University Hospital Kaspela – Plovdiv, Bulgaria
Department of Otorhinolaryngology, Medical University – Plovdiv, Bulgaria
F. Filipova
Department of Otorhinolaryngology, University Hospital Kaspela – Plovdiv, Bulgaria
D. Milkov
Department of Otorhinolaryngology, University Hospital Kaspela – Plovdiv, Bulgaria
