title: Signs of systemic disease are strong determinants of mortality in rheumatoid arthritis: comment on the article by Navarro-Cano et al.
authors.forename: Carl
authors.initials: C
authors.lastname: Turesson
authors.forename: Eric L
authors.initials: EL
authors.lastname: Matteson
mesh_terms: D001172:Arthritis, Rheumatoid / Q000175:diagnosis* / Q000401:mortality*; D015897:Comorbidity; D006801:Humans; D012720:Severity of Illness Index