Online Supplement to: Incidence of Chronic Obstructive Pulmonary Disease in a Cohort of Young Adults According to the Presence of Chronic Cough and PhlegmDownload Online Supplement (PDF Format)Help for downloading files in Adobe Acrobat (PDF) format. If you have not installed and configured the Adobe Acrobat Reader 4.0 or 5.0 on your system, please see Help with Printing for instructions on how to download Adobe Acrobat Reader 5.0 for free. You may not be able to view all PDF files with a previous version of Acrobat Reader.
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