Age DistributionAge FactorsAgingReticulocyte CountIncidenceInfant, NewbornPrevalenceSeasonsSex DistributionUnited StatesSex FactorsPandemicsRisk FactorsInfluenza, HumanPopulation GrowthTime FactorsMeasles VaccineInfluenza A Virus, H1N1 SubtypeMeaslesMaternal AgeDisease OutbreaksCross-Sectional StudiesRetrospective StudiesPopulation SurveillancePregnancyRegistriesDown SyndromeGene DuplicationJapanWalesCohort StudiesFranceEnglandSeroepidemiologic StudiesHealth SurveysIsraelQuestionnairesGermanyFollow-Up StudiesAge of OnsetPopulation DynamicsProspective StudiesHospitalizationChinaModels, StatisticalDeveloping CountriesGreat BritainEvolution, MolecularAnimals, NewbornSocioeconomic FactorsGestational AgeReaction TimeModels, BiologicalBrazilEpidemiologic MethodsVaccinationCanadaDatabases, FactualCause of DeathChoice BehaviorPrenatal Exposure Delayed EffectsModels, TheoreticalCognitionLongitudinal StudiesSurvival RatePhylogenyNeuropsychological TestsAttentionPrognosisSex CharacteristicsNeoplasmsBreast NeoplasmsBody WeightEuropean Continental Ancestry GroupBody Mass IndexRisk AssessmentHealth StatusEducational StatusRats, WistarInterviews as TopicLogistic ModelsMagnetic Resonance ImagingRegression AnalysisAfrican AmericansBrainMotor ActivityTreatment OutcomeAnalysis of VarianceBlood PressureObesityComorbiditySmokingMultivariate Analysis