“Oral Mucositis As a Complication of Antitumor Treatment in Patients With Local – Advanced Head and Neck Cancer: Narrative Review.Oral Mucositis As a Complication of Antitumor Treatment in Patients With Local – Advanced Head and Neck Cancer: Narrative Revi”. 2021. Voprosy Onkologii 67 (5): 606-13. https://doi.org/10.37469/0507-3758-2021-67-5-606-613.