Hermida-Cadahia E. F.; Lampon N.; Tutor J. C. Impact of creatinine production on the agreement between glomerular filtration rate estimates using cystatin C-derived, and 4- and 6-variable Modification of Diet in Renal Disease (MDRD), and Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equ. Upsala Journal of Medical Sciences, v. 117, n. 4, 3 Jul. 2012.