title: Rheumatoid arthritis: erosion defined: back to basics.
authors.forename: Jonathan
authors.initials: J
authors.lastname: Kay
authors.forename: Ellen M
authors.initials: EM
authors.lastname: Gravallese
mesh_terms: D001172:Arthritis, Rheumatoid / Q000000981:diagnostic imaging*; D015331:Cohort Studies; D006801:Humans; D011859:Radiography; D009626:Terminology as Topic