| DHM | Donor human milk |
| NRNJ | Neonatal Research Network of Japan |
| OR | Odds ratio |
| SMD | Standardized mean difference |
| VLBW | Very low birth weight |
| DHM | Donor human milk |
| NRNJ | Neonatal Research Network of Japan |
| OR | Odds ratio |
| SMD | Standardized mean difference |
| VLBW | Very low birth weight |