Manuscript: The halo sign.
Publication: J Bras Pneumol. 2017;43(1):4-4.
On the original publication "The halo sign", in its English version, 2017, n.43, v.1, p.4, where it is written DOI:
http://dx.doi.org/10.1590/s1806-37562016000000354
It should read DOI:
http://dx.doi.org/10.1590/s1806-37562016000000324