1. COPDCHRONIC OBSTRUCTIVE PULMONARY DISEASE 2. According to American Thoracic Society,COPD is defined asA disorder characterized by abnormal test of expiratory flow (structural…
1. COPD CHRONIC OBSTRUCTIVE PULMONARY DISEASE 2. According toAmerican Thoracic Society, COPD is defined as A disorder characterized by abnormal test of expiratory flow (structural…