Castro-Flores A, Christopher Barbier O, González-Galarza F, Delgadillo-Guzmán D. Utility of fractional excretions of electrolytes (FEX) as biomarkers in kidney diseases. RCMT. 2025;16(32):8-18. Accessed July 10, 2026. https://revistas.uadec.mx/cienciasmedicastorreon/article/view/170