patients with rheumatoid arthritis and systemic lupus erythematosus had levels of pepsinogen i similar to controls , whereas patients with sjogren 's syndrome had levels significantly lower than either controls ( p less than 0.001 ) or patients with rheumatic diseases not associated with sicca syndrome ( p less than 0.001 ) .
C0003873
rheumatoid arthritis
C1527336
sjogren 's syndrome