Abortion, SpontaneousAbortion, InducedAbortion, HabitualPregnancyAbortion, VeterinaryAbortion, ThreatenedAbortion, MissedAbortion, TherapeuticPregnancy Trimester, FirstPregnancy OutcomeAbortion, CriminalAbortion, IncompleteAbortion, SepticDilatation and CurettageAbortifacient AgentsFetal DeathAbortion ApplicantsAborted FetusPregnancy ComplicationsMaternal AgeGestational AgeVacuum CurettageTrisomyCongenital AbnormalitiesAbnormalities, Drug-InducedInfertility, FemalePaternal ExposureKaryotypingEmbryo LossAnencephalyParityChromosome AberrationsDeciduaPregnancy, EctopicMisoprostolAbortifacient Agents, NonsteroidalFertilization in VitroChromosome DisordersRisk FactorsChorionic VilliAneuploidyBirth RateCase-Control StudiesDental AssistantsHydatidiform MoleFathersGestational SacEmbryo ImplantationPregnancy Trimester, SecondAbortifacient Agents, SteroidalInfant, NewbornStillbirthInfertilityPlacentaPregnancy RateDenmarkPersonhoodPlacenta DiseasesLaunderingFetusPregnancy Complications, InfectiousAbortion, EugenicLifePregnancy, High-RiskConfounding Factors (Epidemiology)FertilityLive BirthReproductive Techniques, AssistedBeginning of Human LifeTrophoblastsEthylene OxideUterusGamete Intrafallopian TransferOligomenorrheaPaternal AgeAntibodies, AntiphospholipidHistocompatibility, Maternal-FetalEmbryo TransferPregnancy Complications, HematologicUterine HemorrhageComputer TerminalsObstetric Labor, PrematurePregnant WomenChromosomes, Human, 19-20GravidityAntiphospholipid SyndromePregnancy TrimestersOccupational ExposureRetrospective StudiesSpina Bifida OccultaWomen, WorkingTetrachloroethylenePregnancy, MultipleRiskOdds RatioPregnancy, UnplannedProspective StudiesWeldingPreimplantation DiagnosisUltrasonography, Prenatal