Maternal and fetal exposures to fluoride during mid-gestation among pregnant women in northern California.

Environ Health · 2020 · PMC7132865 · PMID 32248806

Europe PMC DOI

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highly significantno p-value reported

However, as the association between maternal serum fluoride and water fluoride was highly significant, maternal serum maybe the best proxy for fetal exposure in studies of the impact of fluoride exposure on fetal and infant development.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.