. 2017 Jul 12;7:317. doi: 10.3389/fcimb.2017.00317
Copyright © 2017 Guo, Zhou, Wen, Liu, Zeng, Xiao, Ou, Han, Huang, Liu, Ye, Zou, Wu, Wang, Zeng, Jing and Yang.
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Figure 1.
Flowchart of literature selection process in this study.