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Continuous and bimonthly publicationISSN (on-line): 1806-3756
José Alberto Neder1a, Danilo Cortozi Berton2a, Denis E O'Donnell1a
Neder1a JA, Berton2a DC, O'Donnell1a DE. Absence of airflow obstruction on spirometry: can it still be COPD?. J Bras Pneumol. 2020;46(6):e20200602