| ILD | interstitial lung disease |
| IPF | idiopathic pulmonary fibrosis |
| IPF-LC | IPF associated with lung cancer |
| HRCT | High resolution computed tomography |
| KL-6 | Krebs von den Lungen-6 |
| fHP | fibrotic hypersensitivity pneumonitis |
| PF-AD | pulmonary fibrosis associated with autoimmune diseases |
| ROC | receiver operating characteristic |
| AUC | area under the curve |
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