MifepristoneAbortifacient Agents, SteroidalHormone AntagonistsMisoprostolAbortifacient Agents, NonsteroidalContraceptives, Postcoital, SyntheticAbortifacient AgentsAbortion, InducedContraceptives, Oral, SyntheticMenstruation-Inducing AgentsLuteolytic AgentsAdministration, IntravaginalLevonorgestrelNorpregnadienesReceptors, GlucocorticoidProgesteroneEndometriumContraceptives, PostcoitalUterine HemorrhageLuteal PhaseProgestinsContraception, PostcoitalContraceptive Agents, FemalePregnancyCytostatic AgentsGonanesMenstruationReceptors, ProgesteroneLabor Stage, FirstTreatment OutcomeAdministration, SublingualPregnancy Trimester, FirstPregnanediolDanazolMenstrual CycleOvulation InhibitionDouble-Blind MethodMegestrolAlcohol-Induced Disorders, Nervous SystemEmbryo ImplantationVacuum CurettageMetrorrhagiaGlucocorticoidsContraceptives, Postcoital, HormonalFallopian TubesAlgestoneNorgestrelOxytocicsDexamethasoneAdministration, OralMenorrhagiaAbortion, LegalCorticosteronePessariesDrug Therapy, CombinationClostridium sordelliiDrug Administration ScheduleEthinyl EstradiolLeiomyomaPlacebosDose-Response Relationship, DrugReceptors, Mineralocorticoid