RT Journal Article SR Electronic T1 Anemia of chronic disease in patients with rheumatoid arthritis: aspects of prevalence, outcome, diagnosis, and the effect of treatment on disease activity. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1467 OP 1468 VO 33 IS 8 A1 Antonius Swaak YR 2006 UL http://www.jrheum.org/content/33/8/1467.abstract AB