Pregnancy ComplicationsPregnancyRupturePregnancy OutcomePre-EclampsiaHypertension, Pregnancy-InducedPregnancy Complications, CardiovascularPregnancy Complications, HematologicFemale Urogenital Diseases and Pregnancy ComplicationsPregnancy Trimester, FirstPregnancy, EctopicAbortion, SpontaneousPregnancy Complications, NeoplasticFetal Growth RetardationAbruptio PlacentaePremature BirthPlacentaPregnancy, AnimalSplenic RuptureAortic RupturePregnancy Trimester, SecondPostoperative ComplicationsUterine ArteryPregnancy Trimester, ThirdFetal Membranes, Premature RuptureCivil DisordersPlacenta DiseasesObstetric Labor, PrematureHeart RupturePregnancy Complications, InfectiousEclampsiaPregnancy, TwinInfant, NewbornGestational AgePlacental CirculationFetal DeathTrophoblastsDiabetes, GestationalCongenital AbnormalitiesUterine RuptureCesarean SectionPreconception CarePregnancy, High-RiskObstetric Labor ComplicationsPregnancy, MultipleStillbirthPrenatal CareUterusRisk FactorsInfant, Small for Gestational AgeUltrasonography, PrenatalAbortion, HabitualPregnancy ProteinsBirth WeightRetrospective StudiesPregnancy RateMaternal AgeParityHeart Rupture, Post-InfarctionAntibodies, AntiphospholipidPlacental InsufficiencyDelivery, ObstetricPregnancy TrimestersPlacentationMultiple Birth OffspringPregnancy TestsMaternal-Fetal ExchangeProspective StudiesPregnancy, TubalPregnancy in DiabeticsAntiphospholipid SyndromeInfant, Low Birth WeightMaternal WelfareReproductive Techniques, AssistedFetal DevelopmentFertilization in VitroTreatment OutcomeCohort StudiesPregnancy in AdolescenceDeciduaOdds RatioThrombophiliaRisk AssessmentLogistic ModelsIntraoperative ComplicationsAneurysm, RupturedPregnancy, UnplannedPregnancy, UnwantedTime FactorsIncidenceHomocysteineInfant, PrematureStomach RuptureNorwayPregnancy Complications, ParasiticFollow-Up StudiesPregnancy, ProlongedCase-Control StudiesAbortion, InducedUnited States