M. J. Alam, F. R. Chowdhury, F. I. Chowdhury, A. K. Saha, A. A. Hoque, and M. Mujiburrahman, “Creatinine clearnce Rate (CCR) in Dignosing Different stages of chronic kidney Disease (CKD) - An update and review”, J. Medicine, vol. 7, no. 2, pp. 64–69, Oct. 2008.