OPPORTUNITIES FOR SURGICAL TREATMENT OF ELDERLY PATIENTS WITH HEAD AND NECK TUMORS ArticleYakovleva L.P., Kropotov M.A., Khodos A.V., Tigrov M.S., Vyalov A.S., Gavrishchuk P.A., Bochkar V.A., Guseinov I.I., Alizade G.R.ORAL ONCOLOGY. Том 118. 2021.