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. 2015 Jan 16;123(6):534–540. doi: 10.1289/ehp.1408387

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Mean changes in urinary biomarker concentrations (95% CI) per unit [ln(ng/m³)] increase in endotoxin in coarse or fine CAP. The number of observations was 143 and 98 for exposures to endotoxin in coarse and fine CAP, respectively.