J. Ahmad, Akram, and Lika H. Othman. “Serum Urea and Serum Creatinine in the Evaluation of Renal Functions in Children and Adults”. Tikrit Journal of Pharmaceutical Sciences, vol. 9, no. 2, Apr. 2023, pp. 245-6, doi:10.25130/tjphs.2013.9.2.6.245.246.