%0 Journal Article %T The Modern Concept of Using Radiation Therapy for Cancer of the Oral Cavity and the Oropharyngeal Area %A Balkanov, A.S. %A Е, С.А. %K oral cancer, oropharyngeal cancer, new classification, radiation therapy, local relapse, life expectancy %J Medical Radiology and radiation safety %D 2020 %N 65 %P 6 %I Federal Medical Biological Agency of Russia