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DOI: 10.1136/bmj.38336.664352.82
Lippincott, Williams & Wilkins, Obstetrical & Gynecological Survey, 9(60), p. 563-565, 2005
DOI: 10.1097/01.ogx.0000175772.14139.55
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Objectives To evaluate the effectiveness of policies and recommendations on folic acid aimed at reducing the occurrence of neural tube defects.