KNOWLEDGE ON THE PREVENTION OF RECURRENCE OF PEPTIC ULCER DISEASE IN OUTPATIENTS AT TRA VINH PROVINCIAL GENERAL HOSPITAL. YHCĐ [Internet]. 2026 June 11 [cited 2026 Sept. 9];66(Vol 67. English Version No 2). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/4050