Pregnancy ComplicationsPregnancyPregnancy OutcomePre-EclampsiaHypertension, Pregnancy-InducedPregnancy Complications, CardiovascularPregnancy Complications, HematologicFemale Urogenital Diseases and Pregnancy ComplicationsPregnancy Trimester, FirstPregnancy, EctopicAbortion, SpontaneousPregnancy Complications, NeoplasticFetal Growth RetardationAbruptio PlacentaePremature BirthPregnancy, AnimalPlacentaPregnancy Trimester, SecondUterine ArteryPregnancy Trimester, ThirdCivil DisordersPostoperative ComplicationsPlacenta DiseasesPregnancy Complications, InfectiousEclampsiaObstetric Labor, PrematurePregnancy, TwinInfant, NewbornGestational AgePlacental CirculationTrophoblastsDiabetes, GestationalCongenital AbnormalitiesFetal DeathPreconception CarePregnancy, High-RiskPregnancy, MultipleCesarean SectionObstetric Labor ComplicationsStillbirthPrenatal CareUterusInfant, Small for Gestational AgeAbortion, HabitualUltrasonography, PrenatalPregnancy ProteinsBirth WeightRisk FactorsImmune SystemPregnancy RateMaternal AgeAntibodies, AntiphospholipidParityRetrospective StudiesPlacental InsufficiencyPlacentationPregnancy TrimestersMultiple Birth OffspringMaternal-Fetal ExchangePregnancy TestsDelivery, ObstetricProspective StudiesPregnancy in DiabeticsPregnancy, TubalAntiphospholipid SyndromeMaternal WelfareFetal DevelopmentReproductive Techniques, AssistedInfant, Low Birth WeightFetal Membranes, Premature RuptureFertilization in VitroPregnancy in AdolescenceCohort StudiesDeciduaOdds RatioThrombophiliaTreatment OutcomeLogistic ModelsRisk AssessmentPregnancy, UnplannedPregnancy, UnwantedIntraoperative ComplicationsHomocysteineTime FactorsImmune ToleranceIncidenceNorwayPregnancy Complications, ParasiticInfant, PrematureCase-Control StudiesPregnancy, ProlongedUnited StatesAbortion, InducedQuestionnairesConfidence IntervalsFollow-Up StudiesPrevalencePregnancy, AbdominalImmunity, InnateBiological Markers