COPD, chronic obstructive pulmonary disease; 72 (7.3%) patients with COPD and 118 (3.7%) patients without COPD had more than one cause of community-acquired pneumonia. Etiology of pneumonia by study g
COPD, chronic obstructive pulmonary disease; 72 (7.3%) patients with COPD and 118 (3.7%) patients without COPD had more than one cause of community-acquired pneumonia.Etiology of pneumonia by study gr
