M, C. M.; SHETTTY K, B. K.; K, G.; MONTEIRO, F. N. P. Correlation of Sonographic Grading of Renal Cortical Echogenicity with Serum Creatinine in Patients with Chronic Kidney Disease. Asian Journal of Medical Radiological Research, v. 6, n. 2, p. 27-30, 3 Feb. 2019.