Most impactive journals
A total of 428 journals published publications related to CRS and NPs, and we filtered them by the number of publications ≥5 and citations ≥50, and a total of 83 journals were eligible.
The journal with the highest number of publications was the International Forum Of Allergy & Rhinology  (n=365), with an average publication year of 2016.7671, followed by the American Journal Of Rhinology & Allergy  (n=318), Journal Of Allergy And Clinical Immunology  (n=188) and Rhinology  (n=188) (Supplementary table 4). Among the top 10 journals with the most publications, the Journal Of Allergy And Clinical Immunology-in Practice  (n=2019.6389), International Forum Of Allergy & Rhinology  (n=2016.7671), European Archives Of Oto-Rhino-Laryngology  (n=2016.0061) had an average later year of publication. These journals produced more cutting-edge articles in recent years. In addition, according to our screening criteria, the most cited journal was the Journal Of Allergy And Clinical Immunology  (n=13739), with an average of 73 citations per article, followed by the International Forum Of Allergy & Rhinology  (n=7813) (Table 2).
We plotted the inter-journal citation network of these 83 journals and distinguished their average publication year by color, showing the citation relationship between different journals (Supplementary figure 3). Such as the International Forum Of Allergy & Rhinology  and the European Archives Of Oto-Rhino- Laryngology  had a strong citation relationship.
According to Bradford’s Law[18-19], evidence of the regularity of the distribution of scientific journals, it is always a small number of journals that contribute to the core sources in a field. We used the Bibliometrix R package to calculate the leading contributing journals in the research of CRS and NPs. They were the International Forum Of Allergy & RhinologyAmerican Journal Of Rhinology & Allergy , Journal Of Allergy And Clinical ImmunologyRhinologyLaryngoscopeEuropean Archives Of Oto-Rhino- Laryngology  (Figure 3A).
We constructed the dual-map overlay of journals using CiteSpace software (Figure 3B). It showed the citation relationships between journals and co-cited journals, with clusters of citing journals on the left and clusters of cited journals on the right. For example, Molecular/ Biology/ Immunology was often cited by Molecular/ Biology/ Genetics, Dentistry/ Dermatology/ Surgery was often cited by Molecular/ Biology/ Genetics, and Medicine/ Medical/ Clinical was often cited by Molecular/ Biology/ Genetics.