29. THE CLINICAL CHARACTERISTICS AND ENDOSCOPIC FEATURES OF PATIENTS WITH GASTRODUODENITIS AND PEPTIC ULCERS AT HA DONG GENERAL HOSPITAL. YHCĐ [Internet]. 2024 June 10 [cited 2026 Sept. 9];65(4). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/1218