Fig. 7

A Visualization map of countries with more than 50 articles. Each node represents a country, with node size proportional to the number of published documents. Lines between nodes indicate collaboration between countries. Major contributors, such as the USA, China, and England, dominate the network, reflecting their central roles in preeclampsia research. B Visualization map of institutions with more than 40 articles. Each node represents an institution, with node size proportional to the number of documents. Lines between nodes represent institutional collaborations. Key institutions, including the University of Mississippi, Shanghai Jiao Tong University, and Harvard University, highlight the major centers driving research in the field