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. 2021 Feb 5;14:343–358. doi: 10.2147/JPR.S292657

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© 2021 Huang et al.

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(A) Cluster map of institutions based on label clusters with title terms. The combination of symbols and numbers delegates the institutions’ study of similar categories. (B) Timeline zone of institutions on acupuncture for cancer pain. The purple node in the middle of the annual ring means the influence and the significance of the institution. Institutions with the homologous research category are on the same time horizon.