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Association between immunosuppressant (IS) exposure and age-adjusted leukocyte telomere length (LTL) percentile as a continuous variable for fibrotic hypersensitivity pneumonitis and unclassifiable interstitial lung disease (uILD) patients. Weighted Cox proportional hazards regression model with robust variance estimation and adjustment for non-idiopathic pulmonary fibrosis ILD diagnosis, radiographic honeycombing and centre.
