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Paper published by Dr Michael L Johnson:


Original Research

Burden of COPD in a government health care system: a retrospective observational study using data from the US Veterans Affairs population

Amir Sharafkhaneh, Nancy J Petersen, Hong-Jen Yu, et al

International Journal of Chronic Obstructive Pulmonary Disease 2010, 5:125-132

Published Date: 22 April 2010