title: HLA-DRW4 and prognosis in rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000276:immunology*; D006680:HLA Antigens / Q000302:isolation & purification*; D006801:Humans; D011379:Prognosis; D011446:Prospective Studies
chemical_list: D006680:HLA Antigens