Intra- and extra-individual biological variability of total calcium, urea, and creatinine in pre-dialysis and post-dialysis adult patients with chronic renal failure. Revista de la Sociedad Ecuatoriana de Nefrología, Diálisis y Trasplante, [S. l.], v. 10, n. 1, p. 13–20, 2022. DOI: 10.56867/8. Disponível em: https://rev-sen.ec/index.php/revista/article/view/8. Acesso em: 8 feb. 2025.