COVID-19 pneumonia and the reversed halo sign [Originally published in J. bras. pneumol., vol. 46 no. 2]

COVID-19 pneumonia and the reversed halo sign [Originally published in J. bras. pneumol., vol. 46 no. 2] [online]. SciELO en Perspectiva, 2020 [viewed ]. Available from: https://blog.scielo.org/es/2020/04/16/covid-19-pneumonia-and-the-reversed-halo-sign-originally-published-in-j-bras-pneumol-vol-46-no-2/