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. 2022 Aug 17;13:947102. doi: 10.3389/fmicb.2022.947102

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Copyright © 2022 Xu, Wang, He and Zhu.

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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(A) Number of publications by year over the past 22 years. (B) Curve fitting of the total annual growth trend of publications (R² = 0.8458). (C) Annual output trend of the top 10 productive countries (the size and colors of the circle represent the NP). (D) Publication counts distribution per country/region.