2026. 44. ASSESSMENT OF MEDICATION ADHERENCE USING THE MORISKY-8 SCALE (MMAS-8) IN OLDER PATIENTS WITH HEART FAILURE WITH REDUCED EJECTION FRACTION. Vietnam Journal of Community Medicine. 66, CĐ14-HNKH BV Giao thông Vận tải (Jan. 2026). DOI:https://doi.org/10.52163/yhc.v66iCD14.3151.