Maternal AgeGestational AgeInfant, Small for Gestational AgePregnancyInfant, NewbornBirth WeightInfant, PrematurePregnancy OutcomeUltrasonography, PrenatalDown SyndromePremature BirthBirth OrderInfant, Low Birth WeightPregnancy, High-RiskPaternal AgePregnancy ComplicationsPregnancy Trimester, FirstPregnancy Trimester, SecondParityCrown-Rump LengthAmniocentesisFetal Growth RetardationPrenatal DiagnosisInfant, Premature, DiseasesRisk FactorsPregnancy Trimester, ThirdInfant MortalityObstetric Labor, PrematureFetal DeathCongenital AbnormalitiesFetusProspective StudiesFetal DiseasesRetrospective StudiesBirth CertificatesFetal DevelopmentCesarean SectionAbortion, SpontaneousCohort StudiesInfant, Very Low Birth WeightTwinsStillbirthTrisomyTerm BirthAmniotic FluidPregnancy, MultipleDelivery, ObstetricApgar ScorePre-EclampsiaPrenatal CareNuchal Translucency MeasurementIntensive Care Units, NeonatalMothersPerinatal MortalityChromosome DisordersNondisjunction, GeneticAneuploidyChorionic Gonadotropin, beta Subunit, HumanChild DevelopmentFetal MacrosomiaFetal HeartPlacentaGastroschisisLogistic ModelsCase-Control StudiesLive BirthPregnancy-Associated Plasma Protein-APrenatal Exposure Delayed EffectsMaternal ExposureReference ValuesRegression AnalysisFetal WeightRetinopathy of PrematurityInfant, Newborn, DiseasesRespiratory Distress Syndrome, NewbornHernia, UmbilicalFetal BloodPregnancy, TwinFetal Membranes, Premature RuptureFetal MortalityTripletsHeart Rate, FetalFollow-Up StudiesBody HeightHypertension, Pregnancy-InducedUmbilical ArteriesDiabetes, GestationalRegistriesObstetric Labor ComplicationsOdds RatioTime FactorsBronchopulmonary DysplasiaEmbryonic and Fetal DevelopmentIntensive Care, NeonatalFertilization in VitroDevelopmental DisabilitiesPregnancy in DiabeticsPerinatal CareAbortion, InducedLabor, Induced