The state of oncology care in Russia: dynamics of five-year survival of patients with malignant neoplasms and its ranked distribution across all tumor sites. Population study at the level of the Northwestern Federal District of Russia. Вопр. онкол. [Internet]. 2023 Apr. 30 [cited 2026 Oct. 14];69(2):227-3. Available from: https://voprosyonkologii.ru/index.php/journal/article/view/2-23-the-state-of-oncology