Gestational AgeInfant, Small for Gestational AgeInfant, NewbornPregnancyInfant, PrematureBirth WeightUltrasonography, PrenatalPremature BirthPregnancy OutcomeFetal Growth RetardationInfant, Premature, DiseasesInfant, Low Birth WeightPregnancy Trimester, SecondFetusPregnancy Trimester, ThirdFetal DevelopmentInfant, Very Low Birth WeightObstetric Labor, PrematurePregnancy ComplicationsCrown-Rump LengthPregnancy Trimester, FirstAmniotic FluidIntensive Care Units, NeonatalTerm BirthFetal HeartFetal DiseasesProspective StudiesReference ValuesMaternal AgeApgar ScoreTwinsRetinopathy of PrematurityRespiratory Distress Syndrome, NewbornInfant MortalityUmbilical ArteriesChild DevelopmentPre-EclampsiaPlacentaFetal DeathReproducibility of ResultsCohort StudiesRisk FactorsRetrospective StudiesBronchopulmonary DysplasiaIntensive Care, NeonatalDelivery, ObstetricPrenatal DiagnosisStillbirthObserver VariationInfant, Newborn, DiseasesInfant, Extremely Low Birth WeightFetal WeightFetal BloodEmbryonic and Fetal DevelopmentDevelopmental DisabilitiesInfant, Extremely PrematureHeart Rate, FetalCesarean SectionFetal MacrosomiaFetal Organ MaturityRegression AnalysisChorioamnionitisFetal Membranes, Premature RuptureHeart RateFetal MonitoringBody HeightPrenatal CareLinear ModelsHeadBirth CertificatesTime FactorsFetal MortalitySensitivity and SpecificityEchoencephalographyGenetic VariationUmbilical CordPregnancy TrimestersParityCongenital AbnormalitiesTripletsCase-Control StudiesMaternal ExposurePregnancy, TwinAnthropometryPregnancy, MultiplePrenatal Exposure Delayed EffectsAutonomic Nervous SystemMaternal-Fetal ExchangeNeonatal ScreeningUltrasonography, DopplerLabor, ObstetricPubic SymphysisPerinatal MortalityAnalysis of VariancePregnancy in DiabeticsPregnancy Complications, CardiovascularHypertension, Pregnancy-InducedAbortion, SpontaneousBlood Flow VelocityEnterocolitis, Necrotizing