| Date | Event | Description |
|---|---|---|
| 18 January 2022 | Amended | Edited the abstract main results section to correct a typograhpical error (changed severe mortality to severe morbidity) |
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.