Maternal AgeGestational AgeInfant, Small for Gestational AgePregnancyInfant, NewbornBirth WeightPregnancy OutcomeInfant, PrematureUltrasonography, PrenatalPremature BirthDown SyndromeInfant, Low Birth WeightBirth OrderPregnancy ComplicationsTreatment OutcomePregnancy, High-RiskPaternal AgePregnancy Trimester, SecondPregnancy Trimester, FirstParityFetal Growth RetardationAmniocentesisCrown-Rump LengthRisk FactorsPrenatal DiagnosisRetrospective StudiesProspective StudiesInfant, Premature, DiseasesOutcome Assessment (Health Care)Infant MortalityFetal DeathCohort StudiesCongenital AbnormalitiesObstetric Labor, PrematurePregnancy Trimester, ThirdFetusFetal DiseasesCesarean SectionAbortion, SpontaneousBirth CertificatesFetal DevelopmentInfant, Very Low Birth WeightStillbirthTwinsDelivery, ObstetricPrenatal CareApgar ScorePregnancy, MultipleTerm BirthTrisomyPre-EclampsiaIntensive Care Units, NeonatalAmniotic FluidMothersNuchal Translucency MeasurementFollow-Up StudiesLogistic ModelsChild DevelopmentPerinatal MortalityChromosome DisordersRegression AnalysisTime FactorsFetal MacrosomiaLive BirthAneuploidyNondisjunction, GeneticPlacentaCase-Control StudiesPrenatal Exposure Delayed EffectsFetal HeartGastroschisisChorionic Gonadotropin, beta Subunit, HumanMaternal ExposureRegistriesInfant, Newborn, DiseasesPregnancy-Associated Plasma Protein-AOdds RatioRetinopathy of PrematurityReference ValuesFetal WeightPregnancy, TwinRespiratory Distress Syndrome, NewbornDevelopmental DisabilitiesHernia, UmbilicalFertilization in VitroObstetric Labor ComplicationsTripletsFetal Membranes, Premature RuptureFetal BloodDiabetes, GestationalHypertension, Pregnancy-InducedFetal MortalityHeart Rate, FetalUmbilical ArteriesRisk AssessmentAge FactorsPerinatal CarePredictive Value of TestsIntensive Care, NeonatalPrognosis