Emilius, D., T. D. Susanto, M. Timotius, and N. Lumbuun. “Validity And Reliability Of The Patient Health Questionnaire-9 (PHQ-9) Instrument For Screening Depression in Patients With Stage 5 Chronic Kidney Disease (End-Stage Renal Disease)”. Medical Profession Journal of Lampung, vol. 16, no. 4, Feb. 2026, pp. 1-7, doi:10.53089/medula.v16i4.1838.