Figure 3.
The Home page of the database A snapshot of the database's homepage. The main menu is shown with the available links for the tools, and the user's manual.
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.