Maternal AgeGestational AgeInfant, Small for Gestational AgePregnancyInfant, NewbornBirth WeightInfant, PrematureSubstance PPregnancy OutcomeUltrasonography, PrenatalDown SyndromePremature BirthBirth OrderInfant, Low Birth WeightPaternal AgePregnancy, High-RiskPregnancy ComplicationsPregnancy Trimester, FirstPregnancy Trimester, SecondParityCrown-Rump LengthAmniocentesisFetal Growth RetardationPrenatal DiagnosisInfant, Premature, DiseasesRisk FactorsPregnancy Trimester, ThirdInfant MortalityFetusObstetric Labor, PrematureFetal DeathCongenital AbnormalitiesBirth CertificatesFetal DiseasesFetal DevelopmentCesarean SectionAbortion, SpontaneousTwinsInfant, Very Low Birth WeightStillbirthSubstance-Related DisordersTrisomyCohort StudiesProspective StudiesTerm BirthPregnancy, MultipleDelivery, ObstetricAmniotic FluidPrenatal CareApgar ScorePre-EclampsiaNuchal Translucency MeasurementMothersIntensive Care Units, NeonatalRetrospective StudiesPerinatal MortalityChromosome DisordersNondisjunction, GeneticChild DevelopmentAneuploidyFetal MacrosomiaPlacentaChorionic Gonadotropin, beta Subunit, HumanFetal HeartPrenatal Exposure Delayed EffectsLogistic ModelsGastroschisisLive BirthMaternal ExposurePregnancy-Associated Plasma Protein-ARegression AnalysisCase-Control StudiesFetal WeightReference ValuesRetinopathy of PrematurityInfant, Newborn, DiseasesPregnancy, TwinHernia, UmbilicalRespiratory Distress Syndrome, NewbornFetal BloodFetal MortalityTripletsHeart Rate, FetalFetal Membranes, Premature RuptureHypertension, Pregnancy-InducedDiabetes, GestationalUmbilical ArteriesBody HeightObstetric Labor ComplicationsOdds RatioEmbryonic and Fetal DevelopmentRegistriesDevelopmental DisabilitiesBronchopulmonary DysplasiaFertilization in VitroPregnancy in DiabeticsPerinatal CareSocioeconomic FactorsIntensive Care, NeonatalLabor, Induced