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. 2018 Apr 16;9:356. doi: 10.3389/fphar.2018.00356

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Copyright © 2018 Zhou, Xia, Peng, Wang, Peng, Li, Wu, Zhang, Zhao, Chen, Huang, Jakobsson, Wen and Huang.

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 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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Forest plots of TwHF extracts treatment compared with a PBO. PBO, placebo; SJC, swollen joint count; MS, morning stiffness; GS, grip strength; ESR, erythrocyte sedimentation rate.