Long-term effects of oral contraceptives on ovarian cancer risk
article by Cristina Bosetti et al published 22 October 2002 in International Journal of Cancer
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author: Fabio Parazzini, Silvia Franceschi, Carlo La Vecchia, Eva Negri, Valerie Beral, Dimitris Trichopoulos, Cristina Bosetti, Stefano Greggi, Anastasia Tzonou
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