Radioactive Hazard ReleaseChemical Hazard ReleaseIsotopesIsotope LabelingRadiation DosageRadiation, IonizingRadiation InjuriesNitrogen IsotopesOxygen IsotopesCarbon IsotopesDose-Response Relationship, RadiationRadiation ToleranceProportional Hazards ModelsRadiationRadiation ProtectionRadiation MonitoringZinc IsotopesRadiation OncologySulfur Isotopes