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Figure 1: Kaplan–Meier survival estimates for interstitial lung disease (idiopathic pulmonary fibrosis and nonidiopathic pulmonary fibrosis interstitial lung disease) patients without acute exacerbation (blue line), nonidiopathic pulmonary fibrosis interstitial lung disease with acute exacerbation (green line), and Idiopathic pulmonary fibrosis with acute exacerbation (red line)

Figure 1: Kaplan–Meier survival estimates for interstitial lung disease (idiopathic pulmonary fibrosis and nonidiopathic pulmonary fibrosis interstitial lung disease) patients without acute exacerbation (blue line), nonidiopathic pulmonary fibrosis interstitial lung disease with acute exacerbation (green line), and Idiopathic pulmonary fibrosis with acute exacerbation (red line)