RT Journal Article SR Electronic T1 Predictors of response to tumor necrosis factor-alpha blockers in ankylosing spondylitis. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1637 OP 1640 VO 32 IS 9 A1 Rubén Burgos-Vargas A1 Jorge Rojas-Serrano YR 2005 UL http://www.jrheum.org/content/32/9/1637.abstract AB