Figure 2.
Community sleep study delayed-treatment “special reserves” membership card. This figure illustrates the card given to delayed-treatment participants to encourage retention.
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.