Fig. 1From: Evolution and long‑term respiratory sequelae after severe COVID-19 pneumonia: nitric oxide diffusion measurement valueNumber of patients with decreased DLNO at 12 months based on their status at 3 months (A) and the concordance of the DLNO/DLNO ratio between 3 and 12 months (B). DLNO diffusion capacity of nitric oxide, DLCO diffusion capacity of carbon monoxide, LLN lower limits of normalBack to article page