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. 2022 Jul 27;9:955237. doi: 10.3389/fcvm.2022.955237

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Copyright © 2022 Xu, Zhao, Xing, Wu and Zhang.

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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The detailed information of the authors' distribution. Each node represented an author, with larger nodes representing more published articles. Different colors referred to clusters of close cooperation. Karin Klingel and Amer Harky had the greatest number of published papers. Most authors were scattered and lacked stable and intensive cooperation and communication. Some authors mainly cooperated on a small scale in this research area. Karin Klingel only cooperated with DaoWen Wang, Enrico Ammirati, Burkert M. Pieske, and Carsten Tschoepe. Amer Harky only cooperated with Aung Oo and Ana Lopez-Marco.