PhenylketonuriasPhenylalaninePhenylalanine HydroxylasePhenylketonuria, MaternalPhenylalanine Ammonia-LyasePhenylpyruvic AcidsBiopterinAnabaena variabilisNeonatal ScreeningTyrosineMetabolism, Inborn ErrorsMicrocephalyInfant, NewbornHomogentisic AcidAmino AcidsIntelligenceFenclonineDiet TherapyCongenital HypothyroidismIntellectual DisabilityDiet, Protein-RestrictedPterinsAmino Acid Metabolism, Inborn ErrorsPhenylacetatesGalactosemias