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.
Design of the study
| First injection | Second injection | Third injection | Fourth injection | Fifth injection | |
| Step 1 | Standard conditions | Control group | Control group | Control group | Virtual reality |
| Step 2 | Standard conditions | Control group | Control group | Virtual reality | Virtual reality |
| Step 3 | Standard conditions | Control group | Virtual reality | Virtual reality | Virtual reality |
