Metals and breast cancer: risk factors or healing agents?

J Toxicol · 2011 · PMC3143443 · PMID 21804822

Europe PMC DOI

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a significant trendno p-value reported

[ 9 ] observed a significant trend of an increased risk of breast cancer by elevated urinary cadmium concentrations, but the mechanisms of action of cadmium remain unclear [ 8 , 30 ].

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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.