title: The TRIFRA trial: efforts employed to minimise expectation bias.
authors: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors: Qian-Wen
authors: QW
authors: Lv
authors: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors: Wen
authors: W
authors: Zhang
authors: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors: Qun
authors: Q
authors: Shi
authors: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors: Wen-Jie
authors: WJ
authors: Zheng
authors: Formerly National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA.
authors: Peter E
authors: PE
authors: Lipsky
authors: Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors: Xuan
authors: X
authors: Zhang
mesh_terms: D018501:Antirheumatic Agents / Q000627:therapeutic use*; D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D004359:Drug Therapy, Combination; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use*; D008517:Phytotherapy / Q000379:methods*; D010936:Plant Extracts / Q000627:therapeutic use; D016032:Randomized Controlled Trials as Topic / Q000379:methods; D012107:Research Design; D029757:Tripterygium
chemical_list: D018501:Antirheumatic Agents; D010936:Plant Extracts; D008727:Methotrexate
keywords: Disease Activity; Methotrexate; Treatment