the respiratory system was evaluated in 40 patients with primary sjogren 's syndrome ( pss ) and its involvement was compared with that of 26 patients with secondary sjogren 's syndrome ( sss ) , 40 with rheumatoid arthritis ( ra ) , 30 with scleroderma and 100 matched healthy controls using questionnaire , physical examination and functional criteria ( spirometry , flow/volume curve , total lung capacity , diffusion ) .
C0220825
evaluated
C0031809
physical