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. 2021 May 21;8:675703. doi: 10.3389/fmed.2021.675703

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Copyright © 2021 Gu, Xie, Jia and Ge.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Analysis of keywords in publications of retinoblastoma. (A) Mapping of the keywords in the field. All keywords were divided into 3 clusters and colored differently: tumor-related research (left in green), clinical research (right in red), and management-related research (up in purple). The circle with a larger size indicates a higher frequency of the keyword; (B) Distribution of keywords on the basis of the average appearance time. Yellow represents a recent appearance, and blue represents an early appearance. The line between two keywords represents their co-occurrence in the same publication, with a thicker line indicating a closer relationship.