MexicoNew MexicoCitiesUrban PopulationGulf of MexicoLeadEl SalvadorAir PollutantsReproductive RightsOzoneTexasUrban HealthAbortion, LegalMexican AmericansEnvironmental ExposureBender-Gestalt TestLatin AmericaNose DiseasesEnvironmental MonitoringTelomere ShorteningPrevalenceAir PollutionHospital RecordsChileHospitals, UrbanParticle SizeRisk FactorsInfant, NewbornCross-Sectional StudiesSocioeconomic FactorsVehicle EmissionsNasal MucosaSeasonsPopulationInfluenza A Virus, H1N1 SubtypeLead PoisoningPublic HealthDisease OutbreaksTobacco Smoke PollutionPregnancyInfluenza, HumanIncidenceDeath CertificatesAge FactorsRegression AnalysisCross-Cultural ComparisonLogistic ModelsAge DistributionSex FactorsMortalityHealth Policy