Prenatal Exposure Delayed EffectsAge FactorsPrenatal DiagnosisPrenatal CarePregnancyUltrasonography, PrenatalAge DistributionInfant, NewbornFetal DiseasesIncidenceSex DistributionSex FactorsPrevalenceRisk FactorsMaternal ExposureGestational AgeIndiaAmniocentesisRetrospective StudiesChorionic Villi SamplingAbortion, EugenicCross-Sectional StudiesFetusPrenatal InjuriesSeroepidemiologic StudiesCohort StudiesMortalityEnglandPregnancy OutcomeRegistriesPregnancy ComplicationsSocioeconomic FactorsUnited StatesCause of DeathPregnancy Trimester, SecondRural PopulationBrazilFetal Alcohol Spectrum DisordersMaternal-Fetal ExchangeUrban PopulationSeasonsNew ZealandQuestionnairesTime FactorsProspective StudiesFetal DevelopmentAccidentsAgingGenetic CounselingBirth WeightCase-Control StudiesHospitalizationPregnant WomenNigeriaAustraliaOdds RatioMalaysiaLogistic ModelsPakistanPopulation SurveillancePoisson DistributionLongitudinal StudiesChickenpoxWalesRural HealthPregnancy Trimester, ThirdAbnormalities, MultipleMass ScreeningFollow-Up StudiesFetal DeathSpainHealth SurveysMothersRiskMaternal AgeGreat BritainMaternal BehaviorRegression AnalysisAbortion, TherapeuticHeterozygote DetectionCongenital AbnormalitiesFranceEpidemiologic MethodsInfant, Low Birth WeightJapanUrban HealthSmokingDown SyndromeEthnic GroupsSingaporeAbortion, InducedRisk AssessmentLife ExpectancyMaternal-Fetal RelationsEuropean Continental Ancestry GroupAccidents, TrafficPregnancy Trimester, FirstScotlandDemographyConfidence Intervals