A CROSS-SECTIONAL STUDY ON THE CLINICAL SIGNIFICANCE OF CREATININE, BLOOD UREA, AND CYSTATIN C IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS AND LUPUS NEPHRITIS. SJHR-Africa 2024, 5 (6), 6. https://doi.org/10.51168/sjhrafrica.v5i6.1186.