Biomonitoring of Metal Exposure During Additive Manufacturing (3D Printing).

Saf Health Work · 2019 · PMC6933169 · PMID 31890335

Europe PMC DOI

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showed a trendno p-value reported

The AM operators showed a trend toward a decreased geometric mean of cobalt and nickel in Year 2 than that in Year 1.

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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.