PregnancyPregnancy OutcomePregnancy ComplicationsPregnancy, AnimalPregnancy, EctopicPregnancy Trimester, FirstPregnancy RatePregnancy Trimester, ThirdPregnancy Complications, CardiovascularPregnancy TestsPregnancy TrimestersPregnancy, MultiplePregnancy in DiabeticsPregnancy, TubalPregnancy Trimester, SecondPregnancy Complications, NeoplasticPregnancy in AdolescencePregnancy Complications, InfectiousAbortion, SpontaneousPregnancy ProteinsPregnancy, High-RiskPregnancy, UnplannedPregnancy, UnwantedGestational AgeSensitivity and SpecificityInfant, NewbornPregnancy Complications, HematologicDiagnostic ErrorsPre-EclampsiaPregnancy, ProlongedPlacentaPregnancy, TwinFetal DeathDiagnostic Tests, RoutineAbortion, InducedUterusPregnancy Complications, ParasiticUltrasonography, PrenatalPregnancy, AbdominalDiagnostic Techniques and ProceduresPregnancy MaintenanceEmbryo ImplantationEmbryo TransferFertilization in VitroDiagnostic ImagingPrenatal CareProspective StudiesMaternal-Fetal ExchangeParityRetrospective StudiesPrenatal Exposure Delayed EffectsBirth WeightMaternal AgePregnancy Reduction, MultifetalHypertension, Pregnancy-InducedCesarean SectionPrenatal DiagnosisPredictive Value of TestsInfertility, FemaleFetal Growth RetardationReagent Kits, DiagnosticRisk FactorsReproducibility of ResultsProgesteronePremature BirthFetusAbnormalities, Drug-InducedCongenital AbnormalitiesTime FactorsLactationFetal DevelopmentDeciduaObstetric Labor, PrematureLabor, ObstetricTwinsDiabetes, GestationalCohort StudiesChorionic GonadotropinFetal DiseasesMaternal ExposureAbortion, TherapeuticROC CurveTrophoblastsAbortion, HabitualPuerperal DisordersInsemination, ArtificialEndometriumAbortifacient Agents, NonsteroidalDelivery, ObstetricMolecular Diagnostic TechniquesAmniotic FluidPlacenta DiseasesSperm Injections, IntracytoplasmicFertilityInfant, Low Birth WeightInfertilityPregnant WomenPreconception CareBiological MarkersDiagnostic and Statistical Manual of Mental Disorders