. 2021 Sep 29;2021:7266263. doi: 10.1155/2021/7266263
Copyright © 2021 Jin-Yang Zhuang et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 1.
The flowchart of recruiting patients.