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Serum Sex Hormone Levels Are Related to Breast Cancer Risk in Postmenopausal Women
(National Institute of Environmental Health Sciences, 1997-04)
We conducted a nested case-control study to prospectively evaluate the relationship of serum estrogens and androgens to risk of breast cancer in postmenopausal women. From 1977 to 1987, 3375 postmenopausal women free of ...