Fig. 2

Bubble map showing words from titles and abstracts of the 100 most-cited cannabis manuscripts. Words from titles and abstracts were parsed, analyzed and visualized by VOSviewer. There were 113 terms that appeared in 5 or more manuscripts and hence were included in the map. Each bubble represents a word or phrase. The bubble size indicates its appearance frequency. The bubble color indicates the averaged citation count received by manuscripts containing the term. If two terms co-appeared in more manuscripts, the two bubbles are closer to each other. The lines indicate the 500 strongest co-appearance links between the terms