ThalliumArsenicThallium RadioisotopesArsenic PoisoningArsenicalsFerrocyanidesOxidesRadioisotopesTomography, Emission-Computed, Single-PhotonWater Pollutants, ChemicalCacodylic AcidDipyridamoleArsenitesExercise TestArsenatesDrinking WaterHeartCoronary DiseaseAntidotesSodium CompoundsWater SupplyAlopeciaBangladeshRodenticidesRadionuclide VentriculographyNailsPoisoningEnvironmental ExposureGated Blood-Pool ImagingIodobenzenesWater Pollution, ChemicalDobutamineWater WellsOrganotechnetium CompoundsCoronary AngiographyCoronary CirculationSoil PollutantsTomography, Emission-ComputedRadionuclide ImagingElectrocardiographyGalliumPotassium RadioisotopesAngina PectorisNew HampshireOlfactory Nerve InjuriesMyocardial StunningSensitivity and Specificity