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Continuous and bimonthly publicationISSN (on-line): 1806-3756
Edson Marchiori1,2, Bruno Hochhegger3,4, Gláucia Zanetti2,5
DOI: http://dx.doi.org/10.1590/S1806-37562016000000354
Marchiori1 E, 2 , Hochhegger3 B, 4 , Zanetti2 G, 5 . The halo sign. J Bras Pneumol. 2017;43(1):4