severe chronic obstructive pulmonary disease copd flare chronic obstructive pulmonary disease copd past year cough produces colored abundant sputum usual smoke cigarettes chronic obstructive pulmonary disease copd diagnosed gastroesophageal reflux work agriculture work construction work mining sector cough traveled country last 4 weeks noticed wheezing sound exhale
bronchitis acute copd exacerbation / infection bronchospasm / acute asthma exacerbation bronchiectasis pneumonia
Acute COPD exacerbation / infection