RT Journal Article SR Electronic T1 Tumor necrosis factor (TNF) can paradoxically increase on etanercept treatment, occasionally contributing to TNF-mediated disease. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 447 OP 449 VO 34 IS 2 A1 Ajay Bhatia A1 Richard E Kast YR 2007 UL http://www.jrheum.org/content/34/2/447.abstract AB