Fig. 9From: Forefronts and hotspots evolution of the nanomaterial application in anti-tumor immunotherapy: a scientometric analysisCorrelation analysis of impact factor. The impact factor is positively correlated with the annual average number of citations (A) and the number of references (B). C Papers with an impact factor greater than ten have more authors. D Differences in impact factor between article and review. E The differences in impact factor of papers in different time periodsBack to article page