StillbirthAbortion, SpontaneousAbortion, HabitualFetal DeathPregnancyPregnancy OutcomeAbortion, ThreatenedPregnancy ComplicationsAbortion, IncompletePregnancy Trimester, FirstInfant MortalityMaternal AgeInfant, NewbornLive BirthGestational AgeAbortion, MissedCongenital AbnormalitiesPerinatal MortalityPremature BirthDilatation and CurettageGestational SacPregnancy Complications, InfectiousParityPrenatal CareAbortion, VeterinaryAbortion, InducedHistocompatibility, Maternal-FetalPregnancy, High-RiskRisk FactorsDelivery, ObstetricBirth WeightUterine HemorrhageObstetric Labor ComplicationsPelvimetryInfertility, FemaleFetal MortalityBirth RateRadioactive PollutantsSyphilis, CongenitalAsphyxia NeonatorumCesarean SectionAbortion, TherapeuticReproductive HistoryAbnormalities, Drug-InducedFetal Growth RetardationPerinatal CareReceptors, Interleukin-8Placenta DiseasesChorionic VilliCase-Control StudiesPregnancy, MultiplePlacentaInfant, Low Birth WeightUltrasonography, PrenatalPregnancy RateCrown-Rump LengthProspective StudiesFetal MovementRetrospective StudiesKaryotypingWorld HealthFetal MonitoringReproductive Techniques, AssistedChromosome AberrationsCohort StudiesInsurancePlacental HormonesObstetric Labor, PrematureFertilization in VitroAbortifacient Agents, NonsteroidalOdds RatioBirth IntervalsAntibodies, AntiphospholipidAntiphospholipid SyndromeEmbryo ImplantationMisoprostolPre-EclampsiaPregnancy Complications, CardiovascularInfertilityMaternal ExposureHypertension, Pregnancy-InducedInfant, PrematureUterusPregnancy Complications, ParasiticAborted FetusPregnancy Complications, HematologicPregnancy TestsVacuum CurettagePlacenta, RetainedCausalityEnglandSperm Injections, IntracytoplasmicDeveloping CountriesAnencephalyKaryotypeEclampsiaPregnancy Trimester, ThirdPrenatal DiagnosisDeciduaTrihalomethanes