AnatomyDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesDisciplines and OccupationsAnthropology, Education, Sociology and Social PhenomenaTechnology, Industry, AgricultureHumanitiesInformation ScienceNamed GroupsHealth CareGeographicals
Contraceptives, OralContraceptives, Oral, CombinedContraceptive AgentsContraceptives, Oral, HormonalContraceptive Agents, FemaleContraceptives, Oral, SyntheticContraceptive DevicesContraceptionContraceptive Devices, FemaleContraception BehaviorContraceptive Agents, MaleIntrauterine DevicesFamily Planning ServicesEthinyl EstradiolDesogestrelNorgestrelLevonorgestrelContraceptives, PostcoitalMestranolNorethindroneVaccines, ContraceptivePregnancy, UnplannedSterilization, ReproductivePregnancy, UnwantedMedroxyprogesterone AcetateSpermatocidal AgentsContraception, PostcoitalPregnancyMenstruationIntrauterine Devices, CopperNorethynodrelAbortion, InducedEthynodiol DiacetateContraception, ImmunologicProgestinsNorpregnenesEthinyl Estradiol-Norgestrel CombinationTime FactorsContraceptives, Oral, SequentialContraceptives, Postcoital, HormonalSterilization, TubalMenstrual CycleAndrostenesParityProgesterone CongenersHealth Knowledge, Attitudes, PracticeIntrauterine Devices, MedicatedContraceptive Devices, MaleMenstruation DisturbancesMegestrolRisk FactorsDrug ImplantsPregnancy in AdolescenceContraceptives, Postcoital, SyntheticSex EducationFertilitySpermatogenesis-Blocking AgentsOvulation InhibitionMedroxyprogesteroneSexual BehaviorCondomsTransdermal PatchNorpregnadienesAge FactorsEthisteroneUterine HemorrhageEstradiol CongenersMetrorrhagiaCase-Control StudiesQuestionnairesEstrogensLogistic ModelsCoitusNonoxynolAbortion ApplicantsXanthurenatesCross-Sectional StudiesProspective StudiesMarriageAbortion, LegalWomen's HealthReproductive Health ServicesReproductive HistoryAmenorrheaCohort StudiesPostpartum PeriodSexually Transmitted DiseasesCoitus InterruptusBirth RateUnited StatesSocioeconomic FactorsMenChlormadinone AcetateCounselingDelayed-Action PreparationsVasectomyThromboembolismRetrospective StudiesOdds RatioFamily Planning Policy