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The top documents tagged [production of sputum]
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CHRONIC OBSTRUCTIVE PULMONARY DISEASE
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Chronic Obstructive Pulmonary Diseases (COPD). Chronic Obstructive Pulmonary Disease Emphysema Bronchiectasis Chronic Bronchitis Asthma A group of conditions
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Chronic Obstructive Pulmonary Dise a ses (COPD)
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