Pregnancy ComplicationsPregnancyPregnancy OutcomePre-EclampsiaHypertension, Pregnancy-InducedPostoperative ComplicationsPregnancy Complications, CardiovascularPregnancy Complications, HematologicFemale Urogenital Diseases and Pregnancy ComplicationsPregnancy Trimester, FirstPregnancy, EctopicAbortion, SpontaneousPregnancy Complications, NeoplasticFetal Growth RetardationAbruptio PlacentaePremature BirthPlacentaPregnancy, AnimalPregnancy Trimester, SecondUterine ArteryPregnancy Trimester, ThirdCivil DisordersPlacenta DiseasesPregnancy Complications, InfectiousEclampsiaInfant, NewbornObstetric Labor, PrematurePregnancy, TwinObstetric Labor ComplicationsGestational AgeRetrospective StudiesPlacental CirculationDiabetes, GestationalFetal DeathCongenital AbnormalitiesTrophoblastsPreconception CareCesarean SectionPregnancy, High-RiskPregnancy, MultipleRisk FactorsStillbirthPrenatal CareInfant, Small for Gestational AgeUterusAbortion, HabitualUltrasonography, PrenatalBirth WeightPregnancy ProteinsTreatment OutcomeProspective StudiesIntraoperative ComplicationsPregnancy RateMaternal AgeParityAntibodies, AntiphospholipidPlacental InsufficiencyPregnancy TrimestersDelivery, ObstetricPlacentationMultiple Birth OffspringPregnancy TestsMaternal-Fetal ExchangePregnancy in DiabeticsPregnancy, TubalAntiphospholipid SyndromeCohort StudiesMaternal WelfareReproductive Techniques, AssistedInfant, Low Birth WeightFetal DevelopmentFetal Membranes, Premature RuptureFertilization in VitroRisk AssessmentOdds RatioPregnancy in AdolescenceTime FactorsLogistic ModelsFollow-Up StudiesDeciduaDiabetes ComplicationsThrombophiliaIncidencePregnancy, UnplannedPregnancy, UnwantedHomocysteineInfant, PrematureNorwayReoperationUnited StatesPregnancy Complications, ParasiticCase-Control StudiesAbortion, InducedPregnancy, ProlongedPrevalenceQuestionnairesLaparoscopyConfidence IntervalsLength of StayBiological Markers