RT Journal Article SR Electronic T1 Growing pains: the ILAR classification of juvenile idiopathic arthritis. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 927 OP 928 VO 28 IS 5 A1 R E Petty YR 2001 UL http://www.jrheum.org/content/28/5/927.abstract AB