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Continuous and bimonthly publicationISSN (on-line): 1806-3756
Edson Marchiori1, Bruno Hochhegger2, Gláucia Zanetti1
DOI: 10.36416/1806-3756/e20220035
Marchiori1 E, Hochhegger2 B, Zanetti1 G. The air crescent sign. J Bras Pneumol. 2022;48(2):e20220035