Global Research Hotspots in Venous Thromboembolism Anticoagulation: A Knowledge-Map Analysis from 2012 to 2021

Figure 7

Bibliometric analysis of theme terms. (a): Distribution of the theme terms. (b): Overlay visualization map of the topic trends. The circle size indicates the number of occurrences, the thickness of the lines indicates the strength of linkage, and the different colors indicate different clusters (a) and the average publication year (b), respectively.

(a)

(b)