Letter: Urinary phenylalanine excretion in phenylketonuria and hyperphenylalaninemia.
D003404:Creatinine / Q000097:blood / Q000652:urine; D004032:Diet; D006801:Humans; D007668:Kidney / Q000378:metabolism; D010649:Phenylalanine / Q000097:blood / Q000652:urine*; D010661:Phenylketonurias / Q000097:blood / Q000652:urine*; D013997:Time Factors
D010649:Phenylalanine; D003404:Creatinine