ABSTRACT BACKGROUND: Phenylketonuria (PKU) is considered to be a rare inborn error of metabolism but one of the commonest causes of mental retardation if untreated. OBJECTIVES: The present study was done to characterize the clinical patterns of PKU and analyze various neuropsychiatric outcomes in PKU children in Sohag Province, Egypt. PATIENTS AND METHODS: A prospective cohort study was conducted on ...
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