Contraceptives, OralProgestinsMedroxyprogesterone AcetateEstrogens, Conjugated (USP)Contraceptives, Oral, CombinedEstrogen Replacement TherapyProgesterone CongenersEstrogensContraceptives, Oral, HormonalContraceptives, Oral, SyntheticContraceptive AgentsEthinyl EstradiolContraceptive Agents, FemaleNorgestrelPostmenopauseMestranolNorethindroneDesogestrelHormone Replacement TherapyLevonorgestrelContraceptionContraceptive DevicesReceptors, EstrogenContraceptive Devices, FemaleContraception BehaviorNorpregnenesEstrogen Receptor alphaNorethynodrelLynestrenolIntrauterine DevicesContraceptive Agents, MaleEthynodiol DiacetateRisk FactorsMenstruationEstrogen Receptor betaEstradiolFamily Planning ServicesCoronary DiseaseAndrostenesContraceptives, PostcoitalMegestrolEstradiol CongenersPromegestoneEthinyl Estradiol-Norgestrel CombinationNorpregnadienesMedroxyprogesteroneMenstrual CycleReceptors, ProgesteronePregnancyContraceptives, Oral, SequentialParityProgesteronePregnancy, UnplannedBreast NeoplasmsMenstruation DisturbancesSterilization, ReproductiveMenopauseVaccines, ContraceptiveIntrauterine Devices, MedicatedNorprogesteronesXanthurenatesCase-Control StudiesMetrorrhagiaOvariectomyPregnancy, UnwantedChlormadinone AcetateUterine HemorrhageReproductive HistorySterilization, TubalCyproterone AcetateOvulation InhibitionTime FactorsAbortion, InducedThromboembolismAge FactorsDrug ImplantsSelective Estrogen Receptor ModulatorsEndometriumEstrogens, CatecholGonadal Steroid HormonesAmenorrheaMenarcheVenous ThrombosisPregnenedionesEndometrial NeoplasmsPremenopauseSpermatocidal AgentsContraception, PostcoitalRiskDrug InteractionsNandroloneMifepristoneIntrauterine Devices, CopperClimactericDiethylstilbestrolDysmenorrheaPyridoxineUterusPregnanediolTransdermal Patch