Present status of the prevention of neural tube defects.
D000649:Amniocentesis; D000653:Amniotic Fluid / Q000032:analysis; D000757:Anencephaly / Q000175:diagnosis; D002490:Central Nervous System / Q000002:abnormalities*; D005260:Female; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000032:analysis; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011296:Prenatal Diagnosis / Q000379:methods; D016135:Spinal Dysraphism / Q000175:diagnosis; D014463:Ultrasonography; D000509:alpha-Fetoproteins / Q000032:analysis
D000509:alpha-Fetoproteins; D006897:Hydroxyindoleacetic Acid