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, InfectiousEclampsiaPregnancy, TwinObstetric Labor, PrematureInfant, NewbornGestational AgePlacental CirculationTrophoblastsDiabetes, GestationalCongenital AbnormalitiesFetal DeathPreconception CarePregnancy, High-RiskPregnancy, MultipleCesarean SectionObstetric Labor ComplicationsPrenatal CareStillbirthInfant, Small for Gestational AgeUterusAbortion, HabitualRisk FactorsUltrasonography, PrenatalPregnancy ProteinsBirth WeightPregnancy RateMaternal AgeParityAntibodies, AntiphospholipidRetrospective StudiesBehavior, AnimalPlacental InsufficiencyPregnancy TrimestersPlacentationMultiple Birth OffspringPregnancy TestsMaternal-Fetal ExchangeDelivery, ObstetricProspective StudiesPregnancy in DiabeticsPregnancy, TubalAntiphospholipid SyndromeMaternal WelfareFetal DevelopmentInfant, Low Birth WeightReproductive Techniques, AssistedFetal Membranes, Premature RuptureFertilization in VitroPregnancy in AdolescenceCohort StudiesDeciduaOdds RatioTreatment OutcomeThrombophiliaLogistic ModelsTime FactorsRisk AssessmentPregnancy, UnplannedPregnancy, UnwantedUnited StatesIntraoperative ComplicationsBehavioral SymptomsHomocysteineIncidenceInfant, PrematureQuestionnairesNorwayPregnancy Complications, ParasiticCase-Control StudiesPregnancy, ProlongedMotor ActivityPrevalenceFollow-Up StudiesAbortion, InducedBehavioral SciencesBehavioral MedicinePrenatal Exposure Delayed Effects