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Can we identify women at risk of pregnancy despite using emergency contraception? Data from randomized trials of ulipristal acetate and levonorgestrel

Pregnancy PreventionContraceptionContraceptive UseHormonal ContraceptiveHealth PolicySexual And Reproductive HealthEmergency ContraceptionContraceptive DiscontinuationReproductive HealthGynecologyMaternal HealthRandomized TrialsUlipristal AcetatePublic HealthMedicineFamily PlanningWomen's HealthHigh-risk Pregnancy