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. 2009 Nov 13;118(3):318–323. doi: 10.1289/ehp.0901332

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Scatterplot of TDCPP in house dust and serum free T₄ (n = 38; r = −0.50; p = 0.002). The inverse relationship remained when one outlying free T₄ value (0.88 ng/dL) was excluded from the analysis (r = −0.45, p = 0.005).