Utility of fractional excretion of urea in acute kidney injury with comparison to fractional excretion of sodium: A systematic review and meta-analysis. - Abdelhafez MO; Alhroob AA; Abu Hawilla MO; Rjoob AA; Abualia NM; Gorman EF; Hamadah AM; Gharaibeh KA (The American journal of the medical sciences, 2024)