Fig 6. Effects of funding and international collaboration on topic proportions.
Differences between papers with and without funding (a), as well as papers with and without international collaboration (b).
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.