Healthcare system encounters before COPD diagnosis: a registry-based longitudinal cohort study | Thorax

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Chronic obstructive pulmonary disease

Healthcare system encounters before COPD diagnosis: a registry-based longitudinal cohort study

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Cite this article as:: Johnson KM, Khakban A, Bryan S, et al

Healthcare system encounters before COPD diagnosis: a registry-based longitudinal cohort study

Thorax 2020;75:108-115.