severe chronic obstructive pulmonary disease copd flare chronic obstructive pulmonary disease copd past year smoke cigarettes chronic obstructive pulmonary disease copd diagnosed gastroesophageal reflux work agriculture work mining sector cough traveled country last 4 weeks noticed wheezing sound exhale
bronchitis acute copd exacerbation / infection anaphylaxis scombroid food poisoning
Acute COPD exacerbation / infection