Name: Interpreting COPD Prevalence Estimates: What Is the True Burden of Disease? -- Halbert et al. 123 (5): 1684 -- Chest
 Description: chronic bronchitis COPD emphysema epidemiology lung diseasesobstructive prevalence chronic bronchitisemphysemaprevalenceepidemiologyagesmokingand
Category: Prevalence Epidemiology
Url: http://www.chestjournal.org/cgi/content/full/123/5/1684
Date: Oct 7, 2005
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