title: Letter: Potential variants of phenylketonuria.
mesh_terms: D002648:Child; D004093:Dihydropteridine Reductase / Q000378:metabolism; D006801:Humans; D008930:Mitochondria, Liver / Q000201:enzymology / Q000378:metabolism*; D010661:Phenylketonurias / Q000201:enzymology* / Q000378:metabolism
chemical_list: D004093:Dihydropteridine Reductase