title: Human leucocyte antigen typing in rheumatoid arthritis/polymyositis overlap syndrome.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000276:immunology*; D005260:Female; D006680:HLA Antigens / Q000276:immunology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017285:Polymyositis / Q000276:immunology*
chemical_list: D006680:HLA Antigens