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.
Initial login interface. (A) Login interface. New participants select “register”, former participants select “log in” and find their page. (B) Information collection. New participants log in and fill in basic information, including name, sex, and age. Adapted from https://unity.com/.
