PregnancyAbortion, HabitualAbortion, SpontaneousPregnancy OutcomePregnancy ComplicationsEmbryo LossPregnancy Trimester, FirstPregnancy, AnimalAntibodies, AntiphospholipidPregnancy RatePregnancy, EctopicEmbryo ImplantationFetal DeathPregnancy Trimester, SecondPregnancy MaintenanceFetal ResorptionPregnancy, MultipleAborted FetusPregnancy Trimester, ThirdStillbirthPregnancy in DiabeticsAntiphospholipid SyndromeDeciduaPregnancy Complications, CardiovascularPregnancy Complications, InfectiousGestational AgeUterusPregnancy TrimestersFertilization in VitroPregnancy TestsInfertility, FemalePlacentaAbortion, InducedAbortion, MissedPregnancy, TubalPregnancy Complications, HematologicPregnancy ProteinsPregnancy, High-RiskChorionic GonadotropinEmbryo TransferPregnancy Complications, NeoplasticTrihalomethanesPregnancy, TwinPregnancy in AdolescenceEndometriumMaternal AgePregnancy Reduction, MultifetalGriefInfant, NewbornPregnanediolSperm Injections, IntracytoplasmicThrombophiliaMaternal-Fetal ExchangeAbortion, SepticPregnancy, UnplannedPreconception CareAbortion, ThreatenedInfertilityTrophoblastsPregnancy, UnwantedUltrasonography, PrenatalVacuum CurettageProgesteroneReproductive Techniques, AssistedLive BirthLupus Coagulation InhibitorCase-Control StudiesFertilizationPlacenta DiseasesAntibodies, AnticardiolipinPregnancy, ProlongedChorionic VilliOvulation InductionChorionic Villi SamplingPre-EclampsiaAmniocentesisLeontopithecusFetusMaternal ExposureCongenital AbnormalitiesUterine DiseasesFetal Growth RetardationRisk FactorsOligomenorrheaFertilityBirth RateMenstrual CycleProspective StudiesOocyte DonationPregnancy, AbdominalPregnancy Complications, ParasiticInsemination, ArtificialVascular Endothelial Growth Factor, Endocrine-Gland-DerivedRetrospective Studiesbeta 2-Glycoprotein IActivated Protein C ResistancePrenatal CareUterine HemorrhageSemen AnalysisHysterosalpingography