title: [Comparative evaluation of respirators (author's transl)].
mesh_terms: D005069:Evaluation Studies as Topic; D006801:Humans; D006813:Humidity; D007385:Intermittent Positive-Pressure Ventilation / Q000295:instrumentation; D010100:Oxygen; D012123:Pulmonary Ventilation; D012122:Ventilators, Mechanical
chemical_list: D010100:Oxygen