DOI:
10.1055/s-00000009
American Journal of Perinatology
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References
Berry RJ, Li Z, Erickson JD , et al; Collaborative Project for Neural Tube Defect Prevention.
Prevention of neural-tube defects with folic acid in China. China-U.S.
N Engl J Med 1999;
341 (20) 1485-1490
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