Ayu Aliyah and Rodiah Rahmawaty Lubis, “COMPARISON OF CYSTATIN C LEVEL IN TEAR FLUID AND SERUM AS BIOMARKERS IN PRIMARY OCULAR TUMORS: Oral Presentation - Observational Study - Resident”, OI, vol. 49, no. S2, Apr. 2024, doi: 10.35749/xj9mck59.