title: Letter: Screening for phenylketonuria.
mesh_terms: D004032:Diet; D005260:Female; D006579:Heterozygote; D006801:Humans; D007231:Infant, Newborn; D008403:Mass Screening; D010649:Phenylalanine / Q000097:blood; D010661:Phenylketonurias / Q000175:diagnosis* / Q000453:epidemiology; D011247:Pregnancy
chemical_list: D010649:Phenylalanine