RT Journal Article SR Electronic T1 Is minimal clinically important difference relevant for the interpretation of clinical trials in pediatric rheumatic diseases? JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 463 OP 465 VO 34 IS 3 A1 Nicolino Ruperto YR 2007 UL http://www.jrheum.org/content/34/3/463.abstract AB