Gas ScavengersRespiratory Protective DevicesHydrocarbons, BrominatedAnesthesia, Closed-CircuitVacuumSodium HydroxideProtective DevicesHydrocarbons, FluorinatedIrritantsNebulizers and VaporizersFiresRadiation-Protective AgentsStereotaxic TechniquesAbsorptionEquipment DesignAdministration, InhalationWorkBreast DiseasesAir Pollutants, OccupationalCarbon DioxideOccupational ExposureAsthmaEvaluation Studies as Topic