Detections of four of the six measured PCB congeners (118, 138, 153, and 170) were each associated with significant or marginally significant elevated risk of ALL, with the highest risk observed for PCB-170 (OR = 2.05; 95% CI, 0.99–4.26).
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Residential exposure to polychlorinated biphenyls and organochlorine pesticides and risk of childhood leukemia.
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