title: The original "DAS" and the "DAS28" are not interchangeable: comment on the articles by Prevoo et al.
authors.forename: D M
authors.initials: DM
authors.lastname: van der Heijde
authors.forename: J W
authors.initials: JW
authors.lastname: Jacobs
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000503:physiopathology; D001799:Blood Sedimentation; D018450:Disease Progression; D006801:Humans; D007596:Joints / Q000473:pathology; D012074:Remission Induction; D015203:Reproducibility of Results; D012720:Severity of Illness Index; D016896:Treatment Outcome