PhenylketonuriasMetabolism, Inborn ErrorsPhenylketonuria, MaternalPhenylalanine HydroxylasePhenylalanineAmino Acid Metabolism, Inborn ErrorsNeonatal ScreeningPhenylpyruvic AcidsBiopterinAnabaena variabilisInfant, NewbornLipid Metabolism, Inborn ErrorsPurine-Pyrimidine Metabolism, Inborn ErrorsSteroid Metabolism, Inborn ErrorsMicrocephalyCarbohydrate Metabolism, Inborn ErrorsIntellectual DisabilityDiet, Protein-RestrictedMaple Syrup Urine DiseaseUrea Cycle Disorders, InbornDiet TherapyIntelligencePhenylalanine Ammonia-LyaseHomogentisic AcidBrain Diseases, Metabolic, InbornMutationCongenital HypothyroidismArgininosuccinic AciduriaHyperammonemiaEnergy MetabolismTyrosineLipid MetabolismGalactosemias