By Gifford Alex H.   Mahler Donald A.   Waterman Laurie A.   Ward Joseph   Kraemer William J.   Kupchak Brian R.   Baird John C.   in COPD: Journal of Chronic Obstructive Pulmonary Disease

ISSN:1541-2555|8|3|160-166

Informa Healthcare‎(2011)‎

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