Table 1. Maternal age ranges used for PDMSCs grouping.
| Group | Age |
| A | 18-21 |
| B | 22-25 |
| C | 26-30 |
| D | 31-35 |
| E | 36 and over |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.