Ayu, A.R.G., Raden Sugeng Riyadi and Gatot Suparmanto 2026. Effectiveness Of Preoperative Education Using Digital Leaflet And Motion Media On Oncology Surgery Patients’ Knowledge Of Surgical Procedures At Pku Muhammadiyah Hospital Yogyakarta. International Journal of Health Engineering and Technology. 5, 2 (Jul. 2026). DOI:https://doi.org/10.55227/ijhet.v5i2.1034.