Risk factors for acute exacerbations of COPD in a primary care population: a retrospective observational cohort study | BMJ Open

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Risk factors for acute exacerbations of COPD in a primary care population: a retrospective observational cohort study

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Cite this article as:: Müllerová H, Shukla A, Hawkins A, et al

Risk factors for acute exacerbations of COPD in a primary care population: a retrospective observational cohort study

BMJ Open 2014;4:e006171. doi: 10.1136/bmjopen-2014-006171