Figure 4 Institution collaborative network analysis. Time slicing: January 2009 to September 2022, Slice length: 1 year, Node types: Institution, Top N=50, Pruning: Pathfinder and Pruning the merged network, N=295, E=387. Above the picture is the timeline with color (2009–2022). The circles in the picture indicate the volume of articles issued, with larger circles indicating more articles issued by the institution, and the connecting lines indicating the existence of a collaborative or co-occurring relationship. A node with BC ≥0.1 is displayed with a purple ring. (Software: CiteSpace 6.2.R2, Drexel University, Philadelphia, USA).