TO STUDY THE FEATURES OF CLINICAL CHANGES IN THE ORGANS OF THE ORAL CAVITY IN DISEASES OF THE DIGESTIVE SYSTEM. Wor.Bul.Pub.Helt. [Internet]. 2023 Mar. 26 [cited 2026 Feb. 3];20:100-3. Available from: https://scholarexpress.net/index.php/wbph/article/view/2381