E. A. Pangarsa, B. Setiawan, D. Santosa, D. Rizky, V. Yunarvika, and C. Suharti, “Adherence to Guidelines: Evaluation of Opioid Usage According to the Who Step Ladder Guideline in Inpatient Cancer Patients”, IJGHR, vol. 7, no. 4, pp. 695-604, Aug. 2025.