title: Results of controlled study of combination therapy with azathioprine and methotrexate in the treatment of rheumatoid arthritis revisited: comment on the article by Willkens et al.
authors.forename: D J
authors.initials: DJ
authors.lastname: McCarty
mesh_terms: D001172:Arthritis, Rheumatoid / Q000188:drug therapy*; D001379:Azathioprine / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use*
chemical_list: D001379:Azathioprine; D008727:Methotrexate