Lv, Qian-Wen Response to D.M. Marcus's comment on the TRIFRA study (comparison of Tripterygium wilfordii Hook F vs methotrexate in the treatment of active rheumatoid arthritis). [electronic resource] - Annals of the rheumatic diseases Sep 2014 - e57 p. digital Publication Type: Letter; Comment ISSN: 1468-2060 Standard No.: 10.1136/annrheumdis-2014-205973 doi Subjects--Topical Terms: Antirheumatic Agents--adverse effectsArthritis, Rheumatoid--drug therapyHumansMethotrexate--therapeutic usePhytotherapy--adverse effectsTripterygium--adverse effects