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This article is maintained by: Elsevier
Article Title: Identification and assessment of COPD exacerbations
Journal Title: Pulmonology
CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.rppnen.2017.10.006
Content Type: article
Copyright: © 2017 Published by Elsevier España, S.L.U. on behalf of Sociedade Portuguesa de Pneumologia.