title: Prognostic value of rheumatoid factors in rheumatoid arthritis.
authors.forename: T
authors.initials: T
authors.lastname: Jónsson
authors.forename: H
authors.initials: H
authors.lastname: Valdimarsson
mesh_terms: D001172:Arthritis, Rheumatoid / Q000276:immunology*; D006801:Humans; D007132:Immunoglobulin Isotypes / Q000032:analysis; D011379:Prognosis; D012217:Rheumatoid Factor / Q000032:analysis*
chemical_list: D007132:Immunoglobulin Isotypes; D012217:Rheumatoid Factor