MercuryMercury PoisoningMercury CompoundsDevelopmental DisabilitiesPolychlorinated BiphenylsMethylmercury CompoundsMercury Poisoning, Nervous SystemEnvironmental PollutantsChild DevelopmentMercury IsotopesRett SyndromeInfant, NewbornDental AmalgamPsychomotor DisordersNervous System DiseasesAutistic DisorderMethyl-CpG-Binding Protein 2Mercuric ChlorideInfant, Extremely Low Birth WeightFood ContaminationInfant, PrematureCerebral PalsyPrenatal Exposure Delayed EffectsOrganomercury CompoundsInfant, Premature, DiseasesPregnancyLeukomalacia, PeriventricularEnvironmental ExposureBrainAroclorsNervous SystemDichlorodiphenyl DichloroethyleneChild Development Disorders, PervasiveHydrocarbons, ChlorinatedWater Pollutants, ChemicalSeafoodChlorodiphenyl (54% Chlorine)SchizophreniaMaternal ExposureDioxinsVolatilizationNeurologic ExaminationBenzofuransUnithiolBody BurdenHairMercury RadioisotopesIntellectual DisabilityInfant, Extremely PrematureEnvironmental MonitoringWilliams SyndromeAsphyxia NeonatorumHalogenated Diphenyl EthersFishesThimerosalMotor Skills DisordersLearning DisordersEchoencephalographyAngelman SyndromeIntelligenceGreat Lakes RegionNeuropsychological TestsGestational AgeInfant, Very Low Birth WeightHypoxia-Ischemia, BrainIntelligence TestsSeychellesEthylmercury CompoundsCognition DisordersBrain Damage, ChronicHexachlorobenzeneCentral Nervous System DiseasesPesticidesSoil PollutantsMagnetic Resonance ImagingDental StaffFollow-Up StudiesAgenesis of Corpus CallosumBronchopulmonary DysplasiaBrain DiseasesPolybrominated BiphenylsNervous System MalformationsMetals, HeavyLeadNeurotoxicity SyndromesEnvironmental PollutionSpectrophotometry, AtomicNorwood ProceduresCohort StudiesAnimals, NewbornChlorobenzenesCerebral VentriclesMaternal-Fetal ExchangeSlovakiaCognitionSeizuresDisease Models, AnimalMiningRisk FactorsBehavior, Animal