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Objective: To prospectively evaluate relationships of organochlorine pesticides and polychlorinated biphenyls (PCBs) with breast cancer, we conducted a case-control study nested in a cohort using the Columbia, Missouri Breast Cancer Serum Bank. Methods: Women donated blood in 1977–87, and during up to 9.5 years follow-up, 105 donors who met the inclusion criteria for the current study were diagnosed...
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