RT Journal Article SR Electronic T1 The concept of disease modification in spondyloarthropathy. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 1583 OP 1585 VO 29 IS 8 A1 Helena Marzo-Ortega A1 Paul Emery A1 Dennis McGonagle YR 2002 UL http://www.jrheum.org/content/29/8/1583.abstract AB