Clusters from the third quadrant (new or falling topics) were marked as less central and less dense; that is, less advanced, gradually emerging, as well as marginally significant, with “surgery”, “biopsy”, “lymphadenectomy”, “dissection” and “gastrectomy” as major themes.
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Global trends in indocyanine green fluorescence navigation in the field of gastric cancer: bibliometrics and knowledge atlas analysis.
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The sentences
The frequency of “gastric cancer” and “apoptosis” is high from 2012 to 2022 (as of November 2022), while the occurrence frequency of “HER2” gradually increased from 2012 to 2015 and showed a decreasing trend from 2016 to 2022.