Figure 3.

Contributions of authors. Mapping of the co-authorship analysis among the authors who published at least 10 papers on the association between depression and BDNF according to VOSviewer. In the figure, the node sizes represent the volume of published literature, the larger the node, the greater the volume of published literature; the lines represent the association strength, the thicker the line, the stronger the connection between the two authors; the node colors represent different clusters.