By Baughman Penelope   in European Journal of Epidemiology

ISSN:0393-2990|27|12|933-943

Springer Publishing Company ‎(2012)‎

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By Baughman Penelope   Marott Jacob L.   Lange Peter   Andrew Michael   Hnizdo Eva   in COPD: Journal of Chronic Obstructive Pulmonary Disease

ISSN:1541-2555|8|2|103-113

Informa Healthcare‎(2011)‎

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