Pregnancy ComplicationsPregnancyPregnancy OutcomePre-EclampsiaHypertension, Pregnancy-InducedPostoperative ComplicationsPregnancy Complications, CardiovascularPremature BirthPregnancy Complications, HematologicFemale Urogenital Diseases and Pregnancy ComplicationsBirth WeightPregnancy Trimester, FirstAbortion, SpontaneousPregnancy, EctopicPregnancy Complications, NeoplasticAbruptio PlacentaeFetal Growth RetardationInfant, NewbornPlacentaPregnancy, AnimalPregnancy Trimester, SecondGestational AgePregnancy Trimester, ThirdUterine ArteryPlacenta DiseasesObstetric Labor, PrematureCivil DisordersPregnancy Complications, InfectiousCongenital AbnormalitiesObstetric Labor ComplicationsInfant, Low Birth WeightEclampsiaFetal DeathRetrospective StudiesCesarean SectionRisk FactorsDiabetes, GestationalPlacental CirculationPregnancy, MultipleTrophoblastsPreconception CarePregnancy, High-RiskPrenatal CareInfant, Small for Gestational AgeStillbirthMaternal AgeUltrasonography, PrenatalParityUterusAbortion, HabitualProspective StudiesMultiple Birth OffspringDelivery, ObstetricTreatment OutcomePregnancy ProteinsPregnancy RateIntraoperative ComplicationsPregnancy TrimestersPlacental InsufficiencyMaternal-Fetal ExchangeCohort StudiesPlacentationBirth RatePregnancy TestsPregnancy in DiabeticsFetal DevelopmentMaternal WelfareReproductive Techniques, AssistedPregnancy, TubalPregnancy in AdolescenceFertilization in VitroFetal Membranes, Premature RuptureOdds RatioRisk AssessmentLogistic ModelsTime FactorsFollow-Up StudiesIncidenceDeciduaThrombophiliaDiabetes ComplicationsPregnancy, UnplannedPregnancy, UnwantedBirth CertificatesUnited StatesBirth OrderNorwayCase-Control StudiesHomocysteinePregnancy Complications, ParasiticButanesAbortion, InducedInfant, PrematureReoperationQuestionnairesPregnancy, ProlongedConfidence IntervalsPrenatal Exposure Delayed EffectsLaparoscopyLength of Stay