00489nas a2200181   4500000000100000000000100001008004100002100001400043700001400057700001800071700001300089700001600102700001300118245014400131300001100275490000700286022001400293       2013                            d1 aS. Norton1 aG. Koduri1 aE. Nikiphorou1 aJ. Dixey1 aP. Williams1 aA. Young00aA study of baseline prevalence and cumulative incidence of comorbidity and extra-articular manifestations in RA and their impact on outcome  a99-1100 v52  a1462-0324