Laura Jane Williams

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BACKGROUND Observational studies and clinical trials have suggested that periconceptional use of folic acid can reduce the risk of birth defects other than neural tube defects (NTDs). Using data(More)
BACKGROUND The prevalence of anencephaly (AN) and spina bifida (SB) was declining long before fortification of enriched grains in the U.S. with folic acid. We examined whether changes in these(More)