| SARS-CoV-2 | Severe Acute Respiratory Syndrome Coronavirus 2 |
| PIMS-TS | Paediatric Inflammatory Multisystem Syndrome—Temporally associated with SARS-CoV-2 |
| PCR | Polymerase Chain Reaction |
| ATS | American Thoracic Society |
| ERS | European Respiratory Society |
| GLI | Global Lung Function Initiative |
| FVC | Forced Vital Capacity |
| FEV1 | Forced Expiratory Volume in 1 Second |
| FEV1/FVC | pseudo-Tiffeneau Index |
| P | value expressed in percentiles |
| BMI | Body Mass Index |
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