RT Journal Article SR Electronic T1 Is there a rationale for switching from one anti-tumor necrosis factor agent to another? JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1021 OP 1022 VO 31 IS 6 A1 Boulos Haraoui YR 2004 UL http://www.jrheum.org/content/31/6/1021.abstract AB