Maternal AgeGestational AgeInfant, Small for Gestational AgePregnancyInfant, NewbornBirth WeightInfant, PrematurePregnancy OutcomeUltrasonography, PrenatalDown SyndromePremature BirthBirth OrderInfant, Low Birth WeightPregnancy ComplicationsPregnancy, High-RiskPaternal AgePregnancy Trimester, SecondPregnancy Trimester, FirstFetal Growth RetardationParityPrenatal DiagnosisAmniocentesisCrown-Rump LengthPostnatal CareFetusInfant, Premature, DiseasesPregnancy Trimester, ThirdFetal DiseasesFetal DevelopmentInfant MortalityAnimals, NewbornFetal DeathCongenital AbnormalitiesObstetric Labor, PrematureRisk FactorsBirth CertificatesCesarean SectionInfant, Very Low Birth WeightAbortion, SpontaneousPrenatal Exposure Delayed EffectsTwinsStillbirthPrenatal CareTerm BirthTrisomyDelivery, ObstetricAmniotic FluidCohort StudiesMothersPregnancy, MultipleApgar ScoreProspective StudiesPre-EclampsiaIntensive Care Units, NeonatalNuchal Translucency MeasurementRetrospective StudiesChild DevelopmentMaternal ExposurePerinatal MortalityFetal HeartChromosome DisordersPlacentaRetinopathy of PrematurityNondisjunction, GeneticAneuploidyFetal MacrosomiaGastroschisisChorionic Gonadotropin, beta Subunit, HumanEmbryonic and Fetal DevelopmentLive BirthInfant, Newborn, DiseasesPregnancy-Associated Plasma Protein-AFetal WeightLogistic ModelsRespiratory Distress Syndrome, NewbornFetal BloodReference ValuesHernia, UmbilicalRegression AnalysisCase-Control StudiesBronchopulmonary DysplasiaPregnancy, TwinBody HeightPerinatal CareHeart Rate, FetalFetal MortalityFetal Membranes, Premature RuptureTripletsMaternal-Fetal ExchangeDevelopmental DisabilitiesAge FactorsUmbilical ArteriesDiabetes, GestationalObstetric Labor ComplicationsHypertension, Pregnancy-InducedBreast FeedingIntensive Care, NeonatalPregnancy in DiabeticsOdds RatioInfant, Extremely Low Birth Weight