Cough and sputum production in COPD patients: clinical phenotype or markers of disease activity?
Department of Respiratory Medicine, Cochin Hospital, AP-HP, Paris, France; Paris Descartes University, Paris, France. pierre-regis.burgel@cch.aphp.fr.
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PR
Burgel
D029481:Bronchitis, Chronic / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications*