| from women | 6 | other |
| within 48 hours | 3 | temporal |
| from the hospital of gynecology akbarabadi | 2 | location |
| placenta → be → collected | 12 |
| placenta → be → obtained | 7 |
| negative | neutral | positive |
| 0.165 | 0.774 | 0.061 |
| Raw frequency | 19 |
| Normalized frequency | 0.447 |
| Modifier score | 0.500 |
| Perplexity | 58.628 |