Table 9.
Countries.
| Country | n |
|---|---|
| United States | 1263 |
| China | 773 |
| England | 511 |
| South Korea | 469 |
| Turkey | 406 |
| Germany | 405 |
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.