title: Comment on the article by Felson et al.
authors.forename: D M
authors.initials: DM
authors.lastname: van der Heijde
authors.forename: P L
authors.initials: PL
authors.lastname: van Riel
authors.forename: M A
authors.initials: MA
authors.lastname: van 't Hof
authors.forename: L B
authors.initials: LB
authors.lastname: van de Putte
mesh_terms: D001172:Arthritis, Rheumatoid; D002986:Clinical Trials as Topic / Q000639:trends*; D006801:Humans; D012107:Research Design