title: Background to the EULAR study.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D006801:Humans; D007391:International Cooperation; D007978:Levamisole / Q000627:therapeutic use*; D010919:Placebos
chemical_list: D010919:Placebos; D007978:Levamisole