in 65 patients with severe rheumatoid arthritis ( ra ) , [ 45 females and 20 males , mean age 55.2 years ( 32 to 76 ) , mean duration of disease 14 years ( 1 to 41 ) ] , azathioprine was given in an average dose of 1.5 mg/kg body weight/day for a mean duration of 33.4 months ( range 1 to 108 ) .
C0003873
rheumatoid arthritis
C0004482
azathioprine