Figure 12.
Word cloud distribution of co-citation cluster results. (Tool: Tagxedo (www.tagxedo.com). Data source: Labels of the top 62 clusters, narrative summary report of the co-citation network.)
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.