| BPD | Bronchopulmonary Dysplasia |
| CLD | Chronic Lung Disease |
| PDA | Patent ductus arteriosus |
| PCS | Postnatal Corticosteroids |
| PMA | Postmenstral Age |
| BPD | Bronchopulmonary Dysplasia |
| CLD | Chronic Lung Disease |
| PDA | Patent ductus arteriosus |
| PCS | Postnatal Corticosteroids |
| PMA | Postmenstral Age |