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EasyRespiratoryChronic obstructive pulmonary diseaseau-amcau-racgp

A 65-year-old man presents with chronic cough productive of sputum most days for at least 3 months in each of the past 2 years. Spirometry shows FEV1/FVC ratio of 0.65 and FEV1 60% predicted. What is the most likely diagnosis?

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