[Reduced number of neural tube defects after folic acid supplementation in China].
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D002681:China / Q000453:epidemiology; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage*; D006801:Humans; D008431:Maternal-Fetal Exchange; D009436:Neural Tube Defects / Q000453:epidemiology / Q000517:prevention & control*; D011247:Pregnancy
D005492:Folic Acid