title: Letter: Antenatal misdiagnosis of neural-tube defects.
mesh_terms: D000653:Amniotic Fluid / Q000378:metabolism; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D009421:Nervous System Malformations; D011247:Pregnancy; D011296:Prenatal Diagnosis; D016135:Spinal Dysraphism / Q000175:diagnosis; D000509:alpha-Fetoproteins / Q000378:metabolism
chemical_list: D000509:alpha-Fetoproteins