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American Thoracic Society, Annals of the American Thoracic Society, 7(12), p. 997-1004, 2015

DOI: 10.1513/annalsats.201408-359oc

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Upper Respiratory Symptoms Worsen over Time and Relate to Clinical Phenotype in Chronic Obstructive Pulmonary Disease

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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