RT Journal Article SR Electronic T1 Pain relief in osteoarthritis: the rationale for combination therapy. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 5 OP 7 VO 31 IS 1 A1 Roy D Altman YR 2004 UL http://www.jrheum.org/content/31/1/5.abstract AB