Efficacy Of Regular Positioning with Ripple Mattress Vs Ripple Mattress Alone in Preventing Pressure Ulcer Among Geriatric Patients in Medical Ward. JEHS. 2024;8(1):45-60. Accessed July 17, 2026. https://www.ejournal.unimel.edu.my/index.php/JEHS/article/view/1863