(Q47876432)
Statements
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The absence of a relation between the periconceptional use of vitamins and neural-tube defects. National Institute of Child Health and Human Development Neural Tube Defects Study Group (English)
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Mills JL
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Rhoads GG
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Simpson JL
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Cunningham GC
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Conley MR
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Lassman MR
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Walden ME
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Depp OR
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Hoffman HJ
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1 August 1989
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321
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7
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430-435
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