the effect of 1alpha-hydroxyvitamin d3 ( 1alpha-ohd3 ) and 1,25-dihydroxyvitamin d3 ( 1,25- ( oh ) 2d3 ) on the intestinal calcium absorption was studied in twenty patients with rheumatoid arthritis treated with prednisone at daily doses of 5 -- 15 mg for 1/2 -- 20 years .
C0003873
rheumatoid arthritis
C0032952
prednisone