For citations:
Krylovetskaya M.A., Komarov I.G., Kontsevaya A.Yu., Malikhova O.A. Role of upper respiratory tract fibroscopy in patients with cervical lymph node metastases from squamous-cell carcinoma without the primary tumor found. Head and Neck Tumors (HNT). 2020;10(4):10-15. (In Russ.) https://doi.org/10.17650/2222-1468-2020-10-4-10-15