title: Letter: Prenatal diagnosis of metabolic disorders.
mesh_terms: D000653:Amniotic Fluid / Q000201:enzymology; D004796:Clinical Enzyme Tests; D005260:Female; D006801:Humans; D008661:Metabolism, Inborn Errors / Q000175:diagnosis*; D011247:Pregnancy; D011296:Prenatal Diagnosis / Q000379:methods*