Oral contraceptive use and ovarian cancer risk among carriers of BRCA1 or BRCA2 mutations von Whittemore, A S, Balise, R R, Pharoah, P D P, DiCioccio, R A, Oakley-Girvan, I, Ramus, S J, Daly, M, Usinowicz, M B, Garlinghouse-Jones, K, Ponder, B A J, Buys, S, Senie, R, Andrulis, I, John, E, Hopper, J L, Piver, M S

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