title: Performance characteristics of conventional and prototype humidifiers and nebulizers.
mesh_terms: D005069:Evaluation Studies as Topic; D006801:Humans; D006813:Humidity; D007442:Intubation, Intratracheal / Q000009:adverse effects; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation*; D012138:Respiratory Therapy / Q000295:instrumentation*; D014465:Ultrasonics