30. EVALUATION OF THE EFFECTIVEENESS OF HIGH FREQUENCY CHEST PERCUSSION MACHINE IN PATIENTS ON VENTILATORS AT INTENSIVE CARE DEPARTMENT 1, VIET DUC UNIVERSITY HOSPITAL. YHCĐ [Internet]. 2024 Sept. 26 [cited 2026 Sept. 9];65(CĐ 9 - Hội Gây mê Hồi sức). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/1544