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A prospective, randomized, double-blind parallel-arm, placebo-controlled study to assess the effects on ovarian activity of a combined oral contraceptive pill when preceded by the intake of ellaOne® (ulipristal acetate 30 mg) or placebo.

Primary objective:To compare the effects of quick starting a combined oral contraceptive on follicular growth and hormonal parameters after ellaOne® or placebo intake.Secondary objective:To compare the effects of quick starting a combined oral…