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. 2013 Jun 25;121(9):1103–1109. doi: 10.1289/ehp.1205901

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Median levels of organochlorine chemicals measured in adult serum from the NHANES compared with women from the CPP. The NHANES 50th percentile for dieldrin, heptachlor epoxide, and p,p’‑DDT was below the LOD (< 0.01 μg/L).