Fig 1. SPIRIT checklist.
-V1. Enrolment visit. V2. Allocation visit. V1 – V14. Post – allocation visits. V15. Close out visit.
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.