| ACE | Angiotensin-converting enzyme |
| CI | Confidence interval |
| EBUS-TBNA | Endobronchial ultrasound-guided transbronchial needle aspiration |
| ERS | European Respiratory Society |
| FEV1 | Forced expiratory volume in one second |
| FVC | Forced vital capacity |
| HR | Hazard ratio |
| IQR | Interquartile range |
| MAR | Missing at random |
| SD | Standard deviation |
| WASOG | World Association of Sarcoidosis and Other Granulomatous Disorders |
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