EFFECTIVENESS OF AN AIR PURIFICATION SYSTEM IN REDUCING AIRBORNE MICROBIAL LOAD IN THE NEUROSURGICAL INTENSIVE CARE UNIT AT CHO RAY HOSPITAL: AN INTERVENTION STUDY. YHCĐ [Internet]. 2026 Apr. 25 [cited 2026 Sept. 9];67(4). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/4940