. 2022 Jun 17;14:876954. doi: 10.3389/fnagi.2022.876954
Copyright © 2022 Dong, Weng, Hu, Mao, Zhang, Lu, Shi, Du, Wang, Wang and Wang.
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.
FIGURE 3.
World map of the total output of countries or regions.