18. PSYCHOLOGY OF PATIENTS BEFORE PLANNED SURGERY AT UNIVERSITY MEDICAL CENTER HO CHI MINH CITY BRANCH 2. YHCĐ [Internet]. 2025 Sept. 25 [cited 2026 Sept. 9];66(CĐ13- HNKH Gây mê Hồi sức). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/3184