Critical review of respiratory therapy: epidemiologic considerations.
D000336:Aerosols; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D006801:Humans; D007384:Intermittent Positive-Pressure Breathing; D008173:Lung Diseases, Obstructive / Q000628:therapy*; D010102:Oxygen Inhalation Therapy; D026741:Physical Therapy Modalities; D012107:Research Design; D012138:Respiratory Therapy
D000336:Aerosols