Fig. 2From: Frequency, proportion of PF-ILD, and prognostic factors in patients with acute exacerbation of ILD related to systemic autoimmune diseasesProportion of patients with AE-SAID-ILD who fulfilled the criteria for PF-ILD within 12Â months before AE. Abbreviations: PF-ILD: progressive fibrosing interstitial lung disease, AE-SAID-ILD: acute exacerbation of systemic autoimmune disease-related interstitial lung diseasesBack to article page