Figure 4. The dual-map overlay of journals related to epilepsy during pregnancy research.

The graphics corresponding to the citing journals and the cited journals were located on the left and right of the network map, respectively. The blue labels represent the disciplines covered by the journal, the lines on the map start from the left and end on the right, representing the citation links. The ellipses of different size in the graph show the number of articles on their vertical axis and the number of authors on their horizontal axis.