title: The need for new classification criteria for rheumatoid arthritis.
authors.affiliation: Division of Rheumatology, Department of Internal Medicine III, Medical University of Vienna, Vienna General Hospital, Waehringer Guertel 18-20, A-1090 Vienna, Austria. josef.smolen@wienkav.at
authors.forename: Daniel
authors.initials: D
authors.lastname: Aletaha
authors.forename: Ferdinand C
authors.initials: FC
authors.lastname: Breedveld
authors.forename: Josef S
authors.initials: JS
authors.lastname: Smolen
mesh_terms: D001172:Arthritis, Rheumatoid / Q000145:classification* / Q000175:diagnosis*; D042241:Early Diagnosis; D006801:Humans; D012219:Rheumatology / Q000379:methods*; D012955:Societies, Medical