Fig. 5

Principal countries and regions in the study. The top three in article count are China (59), USA (33), and Taiwan, China (30), while the citation count leaders are USA (1237), China (1071), and Singapore (728). In terms of average citations per country, the top three are Malaysia (158.75), Singapore (121.33), and Denmark (71.67). For international collaboration, the top three are China (29), England (24), and USA (23)