| PCD | Primary Ciliary Dyskinesia |
| SARS-CoV-2 | severe acute respiratory syndrome due to coronavirus 2 |
| COVID-19 | Coronavirus Disease 2019 |
| PSI-SF | Parenting Stress Index-Short Form |
| PD | Parental Distress |
| P-CDI | Parent-Child Dysfunctional Interaction |
| DC | Difficult Child |
| DEF | Defensive Responding |
| PGWBI | Psychological General Well-Being Index |
| TEM | transmission electron microscopy |
| FVC | forced vital capacity |
| FEV1 | forced expiratory volume in 1 s |
| PA | Pseudomonas aeruginosa |
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