title: Letter: Screening for phenylketonuria.
mesh_terms: D005260:Female; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D007231:Infant, Newborn; D008403:Mass Screening; D010661:Phenylketonurias / Q000175:diagnosis* / Q000235:genetics; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*