Gestational AgeInfant, Small for Gestational AgeInfant, NewbornPregnancyInfant, PrematureBirth WeightUltrasonography, PrenatalPremature BirthPregnancy OutcomePrenatal DiagnosisFetal Growth RetardationInfant, Premature, DiseasesInfant, Low Birth WeightPregnancy Trimester, SecondFetusPregnancy Trimester, ThirdFetal DevelopmentRetrospective StudiesInfant, Very Low Birth WeightPregnancy ComplicationsFetal DiseasesSensitivity and SpecificityProspective StudiesObstetric Labor, PrematurePregnancy Trimester, FirstAmniotic FluidCrown-Rump LengthIntensive Care Units, NeonatalDelayed DiagnosisFetal HeartEarly DiagnosisTerm BirthRisk FactorsMaternal AgeCohort StudiesApgar ScoreRetinopathy of PrematurityTwinsRespiratory Distress Syndrome, NewbornFetal DeathInfant MortalityPre-EclampsiaPlacentaReference ValuesUmbilical ArteriesChild DevelopmentInfant, Newborn, DiseasesBronchopulmonary DysplasiaDelivery, ObstetricIntensive Care, NeonatalStillbirthInfant, Extremely Low Birth WeightDiagnosisFetal WeightPredictive Value of TestsFetal BloodCesarean SectionDevelopmental DisabilitiesFollow-Up StudiesEmbryonic and Fetal DevelopmentInfant, Extremely PrematureFetal MacrosomiaReproducibility of ResultsFetal Organ MaturityChorioamnionitisFetal Membranes, Premature RuptureCase-Control StudiesPrenatal CareTime FactorsCongenital AbnormalitiesBody HeightBirth CertificatesUmbilical CordEchoencephalographyHeadNeonatal ScreeningFetal MortalityRegression AnalysisParityHeart Rate, FetalPregnancy TrimestersFetal MonitoringDiagnostic ErrorsAmniocentesisLogistic ModelsIncidenceTripletsUltrasonography, DopplerPregnancy, MultiplePregnancy, TwinCross-Sectional StudiesMaternal ExposurePregnancy Complications, CardiovascularMaternal-Fetal ExchangeUltrasonographyAbortion, SpontaneousHernia, DiaphragmaticHydrops FetalisPrenatal Exposure Delayed EffectsPrognosis