title: The American College of Rheumatology/European League Against Rheumatism Criteria for the classification of rheumatoid arthritis: a game changer.
authors.forename: Stanley
authors.initials: S
authors.lastname: Cohen
authors.forename: Paul
authors.initials: P
authors.lastname: Emery
mesh_terms: D001172:Arthritis, Rheumatoid / Q000145:classification / Q000175:diagnosis*; D018450:Disease Progression; D006801:Humans; D007391:International Cooperation; D012720:Severity of Illness Index