Fig. 1From: Lung Cancer development and mortality in interstitial lung disease with and without connective tissue diseases: a five-year Nationwide population-based studyStudy flowchart. Flowchart of patient selection for CTD-ILD and ILD-only. COPD, chronic obstructive pulmonary disease; CTD-ILD, connective tissue disease-associated interstitial lung disease; ICD, International Classification of Disease; ILD, interstitial lung diseaseBack to article page