DexamethasonePrednisoloneSolar ActivityCosmic RadiationRadiation ProtectionRadiation MonitoringRadiation DosageRadiometryNeutronsSteroidsRelative Biological EffectivenessGlucocorticoidsSpace FlightRadiotherapy, High-EnergyWhole-Body CountingAnti-Inflammatory AgentsTissue DistributionPhotonsIodine RadioisotopesMonte Carlo MethodRadiotherapy DosagePhantoms, ImagingRadiopharmaceuticalsReceptors, SteroidReceptors, GlucocorticoidMethylprednisoloneDrug Therapy, CombinationHydrocortisoneGonadal Steroid HormonesAdministration, OralAzathioprineTime FactorsImmunosuppressive AgentsTreatment OutcomeAdrenal Cortex HormonesDouble-Blind MethodPulse Therapy, DrugDrug Administration ScheduleAntiemeticsDose-Response Relationship, DrugMifepristoneBetamethasone