Oral Contraceptives and Breast Cancer–Reply–I
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[1] P. Wingo,et al. Oral contraceptives and the risk of breast cancer. , 2002, The New England journal of medicine.
[2] D. Thomas,et al. Breast cancer and specific types of combined oral contraceptives. The WHO Collaborative Study of Neoplasia and Steroid Contraceptives. , 1992, British Journal of Cancer.