title: Inadequacy of urinary urea for estimating nitrogen balance.
authors: N J
authors: NJ
authors: Fuller
authors: M
authors: M
authors: Elia
mesh_terms: D006801:Humans; D009584:Nitrogen / Q000378:metabolism*; D010289:Parenteral Nutrition, Total; D015203:Reproducibility of Results; D014508:Urea / Q000652:urine*
chemical_list: D014508:Urea; D009584:Nitrogen