| BPD | bronchopulmonary dysplasia (chronic lung disease of prematurity) |
| AA | amino acid |
| AC | acylcarnitine |
| NEC | necrotizing enterocolitis |
| IVH | intraventricular hemorrhage |
| ROP | retinopathy of prematurity |
| GA | gestational age |
| BPD | bronchopulmonary dysplasia (chronic lung disease of prematurity) |
| AA | amino acid |
| AC | acylcarnitine |
| NEC | necrotizing enterocolitis |
| IVH | intraventricular hemorrhage |
| ROP | retinopathy of prematurity |
| GA | gestational age |