RT Journal Article SR Electronic T1 Cost-effectiveness modeling in rheumatology: toward principles of good practice. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 21 OP 22 VO 68 A1 Ron Goeree A1 Bernie J O'Brien YR 2003 UL http://www.jrheum.org/content/68/21.abstract AB