we studied 112 patients : 71 had rheumatoid arthritis ( 57 sero positive ) , 19 had connective tissue diseases or vasculitis ( six sjogren 's syndrome alone , six systemic sclerosis , three mixed connective tissue diseases , three polyarteritis , one relapsing polychondritis ) , and 22 patients had other inflammatory , metabolic or degenerative joint diseases .
C0003873
rheumatoid arthritis
C1527336
sjogren 's syndrome