RT Journal Article SR Electronic T1 Radiographic issues in imaging the progression of hip and knee osteoarthritis. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 36 OP 44 VO 70 A1 Eric Vignon YR 2004 UL http://www.jrheum.org/content/70/36.abstract AB