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.
(A) Network visualization of co-authored analysis. (B) Author citation analysis overlay visualization based on VOSviewer. Purple nodes represent authors involved in earlier studies in the field, while yellow nodes represent authors engaged in later studies.
