title: Neonatal screening for phenylketonuria. II. Age dependence of initial phenylalanine in infants with PKU.
mesh_terms: D000367:Age Factors; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000097:blood / Q000453:epidemiology*; D008297:Male; D008403:Mass Screening; D009864:Ontario; D010649:Phenylalanine / Q000097:blood*; D010661:Phenylketonurias / Q000097:blood / Q000453:epidemiology*; D011792:Quebec; D013997:Time Factors; D014481:United States
chemical_list: D010649:Phenylalanine