title: 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).
authors.affiliation: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors.forename: Qian-Wen
authors.initials: QW
authors.lastname: Lv
authors.affiliation: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Zhang
authors.affiliation: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors.forename: Qun
authors.initials: Q
authors.lastname: Shi
authors.affiliation: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors.forename: Wen-Jie
authors.initials: WJ
authors.lastname: Zheng
authors.affiliation: Formerly National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA.
authors.forename: Peter E
authors.initials: PE
authors.lastname: Lipsky
authors.affiliation: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors.forename: Xuan
authors.initials: X
authors.lastname: Zhang
mesh_terms: D018501:Antirheumatic Agents / Q000009:adverse effects*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use*; D008517:Phytotherapy / Q000009:adverse effects*; D029757:Tripterygium / Q000009:adverse effects*
chemical_list: D018501:Antirheumatic Agents; D008727:Methotrexate
keywords: Methotrexate; Rheumatoid Arthritis; Treatment