Pregnancy TrimestersPregnancy Trimester, FirstPregnancy Trimester, ThirdPregnancy Trimester, SecondPregnancyPregnancy ComplicationsPregnancy OutcomePregnancy, AnimalPregnancy, EctopicGlycoproteinsPregnancy Complications, CardiovascularGestational AgePregnancy RateUltrasonography, PrenatalAbortion, SpontaneousPregnancy in DiabeticsPregnancy Complications, NeoplasticPregnancy Complications, InfectiousPregnancy, MultiplePregnancy TestsPlacentabeta 2-Glycoprotein IPregnancy, TubalPre-EclampsiaPregnancy ProteinsViral Envelope ProteinsInfant, NewbornPregnancy in AdolescencePregnancy, High-RiskAbortion, InducedTrophoblastsPregnancy Complications, HematologicFetal DeathFetal DiseasesPrenatal DiagnosisPlatelet Glycoprotein GPIb-IX ComplexPregnancy, UnplannedGlycopeptidesMolecular Sequence DataPrenatal CareFetusMaternal-Fetal ExchangeChorionic VilliPregnancy, UnwantedDeciduaOrosomucoidFetal DevelopmentFetal Growth RetardationAbnormalities, Drug-InducedUterusAmino Acid SequencePregnancy, TwinBirth WeightPrenatal Exposure Delayed EffectsMyelin-Associated GlycoproteinMembrane GlycoproteinsPregnancy Complications, ParasiticAmniotic FluidMaternal AgeAbortifacient Agents, NonsteroidalParityHypertension, Pregnancy-InducedGlycosylationMaternal ExposurePlatelet Membrane GlycoproteinsCrown-Rump LengthPregnancy, ProlongedPremature BirthChorionic Gonadotropin, beta Subunit, HumanProspective StudiesPlatelet Glycoprotein GPIIb-IIIa ComplexPregnancy MaintenancePregnancy, AbdominalAntibodies, MonoclonalCell LineEmbryo ImplantationCesarean SectionFertilization in VitroChorionic GonadotropinAbortion, HabitualAbortion, TherapeuticObstetric Labor, PrematureCongenital AbnormalitiesEmbryo TransferGlycoprotein Hormones, alpha SubunitPlacentationDown SyndromeMolecular WeightDiabetes, GestationalMisoprostolLabor, ObstetricInfant, Low Birth WeightAmniocentesisTwinsRisk FactorsPlacental CirculationAbortifacient AgentsProgesteronePlacenta DiseasesPregnancy Reduction, Multifetal