Most influential country and institution
These publications came from 82 countries and 3,139 institutions. We set the publication threshold to 10 publications, and 43 countries met the criteria. The top 10 countries were distributed in Asia, North America, and Europe, mainly in Europe (n=5), with the United States having the highest number of publications (n=1248, 33.5%), followed by China (n=631, 17.0%), Korea (n=293, 7.9%), and Belgium (n=272, 7.3%). During these 20 years, the total number of citations of publications published in the USA ranked first with 39027 (Table 1).
Based on the selection criteria, we visualized the number of publications and inter-country collaboration networks for these 82 countries (Figure 2A). For example, The United States had close collaborative relationships with Canada, England, and Germany. In addition, we also mapped the geographical distribution of inter-country collaborations (Figure 2B) and the publication density (Supplementary figure 1).
As with the above criteria, 190 of the 3,139 institutions met our criteria. The top 10 institutions were also located in Asia, North America, and Europe, mainly in the United States (n=3) and China (n=3). Northwestern University (n=1248) was the top institution in terms of the number of publications, followed by Capital Medical University (n=631) and Sun Yat-sen University (n=293). Meanwhile, Northwestern University also achieved the highest citations. We analyzed the average year of the publications for the top 10 institutions, with larger values for Harvard Medical School (2019.4316), Capital Medical University (2018.4385), and Karolinska Institutet (2018.043), implying that these three institutions may have invested more in this research of CRS and NPs in recent years (Supplementary table 1).
Similarly, we constructed a collaboration network among the 190 institutions and visualized the average year of the publications from different institutions (Figure 2C). Most institutions with high publication volume collaborated with other institutions, especially within the same country. Some had many collaborating institutions, such as Sun Yat-sen University.