Correlations between volumetric capnography and automated quantitative computed tomography analysis in patients with severe COPD - Diniz, Odair Henrique Gaverio; Pereira, Monica Corso; Silva, Silvia Maria Doria da; Koenigkam-Santos, Marcel; Paschoal, Ilma Aparecida; Moreira, Marcos Mello (Journal of Respiration, 2022)