Figure 3.
Peer‐review publications related to Covid‐19 (1 January 2020 to 31 May 2020)
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.