. 2021 Jun 17;8:689568. doi: 10.3389/fmed.2021.689568
Copyright © 2021 Pang, Li, Liu, Wu, Xia, Zhang, Le, Li, Lai, Ou, Ma, Liu, Zhou, Wang, Xie, Zhang, Jiang, Liu and Zeng.
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Figure 1.
Flowchart of the patient inclusion.