Figure 7.
Top 25 keywords with the strongest citation bursts from 2003 to 2022. The red segment of the blue line denoted the burst duration of a keyword.
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.