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CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD)

A disease characterized by chronic bronchitis or emphysema and airflow obstruction that is generally progressive, may be accompanied by airway hyperreactivity, and may be partially reversible.

American Thoracic Society :
Standards for the care of patients with obstructive pulmonary disease :
AM J Respir Crit Care Med 152 : Sup 78, 1995