RT Journal Article SR Electronic T1 Use of prognostic markets to guide biologic therapies for rheumatoid arthritis. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2662 OP 2662 VO 29 IS 12 A1 Christopher A D'Arcy A1 Robert F Willkens YR 2002 UL http://www.jrheum.org/content/29/12/2662.abstract AB