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Lu Y, Ma H, Malone KE, Norman SA, Sullivan-Halley J, Strom BL, Simon MS, Marchbanks PA, McDonald JA, West DW, Henderson KD, Deapen D, Ursin G, Bernstein L. Oral contraceptive use and survival in women with invasive breast cancer. Cancer Epidemiol Biomarkers Prev. 2011 Jul;20(7):1391–7. PMID: 21551244; PMCID: PMC3132273. |