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  Indian J Med Microbiol
 

Figure 6: Graphical mapping of keywords using VOSviewer software with at least eight keywords co-occurrence. Lager nodes represent keywords with a more frequent appearance of which “human” is the central node. The small distance between two terms represents that a large number of co-occurrences of the terms. Well-differentiated clusters can be observed including “human” (blue), “meta-analysis” (red), “review” (green), and “root canal therapy” (yellow)

Figure 6: Graphical mapping of keywords using VOSviewer software with at least eight keywords co-occurrence. Lager nodes represent keywords with a more frequent appearance of which “human” is the central node. The small distance between two terms represents that a large number of co-occurrences of the terms. Well-differentiated clusters can be observed including “human” (blue), “meta-analysis” (red), “review” (green), and “root canal therapy” (yellow)