Comparison of the impact of Tripterygium wilfordii Hook F and Methotrexate treatment on radiological progression in active rheumatoid arthritis: 2-year follow up of a randomized, n... oleh Yang-zhong Zhou, Li-dan Zhao, Hua Chen, Yan Zhang, Dan-feng Wang, Lin-fang Huang, Qian-wen Lv, Bin Liu, Zhenbin Li, Wei Wei, Hongbin Li, Xiangping Liao, Hui Liu, Xiumei Liu, Hongtao Jin, Junxiang Wang, Yun-yun Fei, Qing-jun Wu, Wen Zhang, Qun Shi, Wen-jie Zheng, Feng-chun Zhang, Fu-lin Tang, Peter E. Lipsky, Xuan Zhang