Chinese herbal medicine Xinfeng Capsule in treatment of rheumatoid arthritis: Study protocol of a multicenter randomized controlled trial

Jian Liu, Chuan-bing Huang, Yuan Wang, Gui-qin Xu, Yuan-yuan Cheng, Yun-xia Feng, Lei Liu, Ya-jun Qi

Journal of Integrative Medicine . 2013, (6): 428 -434 . DOI: 10.3736/jintegrmed2013059