PT - JOURNAL ARTICLE AU - Ross E Petty TI - Frequency of uncommon diseases: is juvenile idiopathic arthritis underrecognized? DP - 2002 Jul 01 TA - The Journal of Rheumatology PG - 1356--1357 VI - 29 IP - 7 4099 - http://www.jrheum.org/content/29/7/1356.short 4100 - http://www.jrheum.org/content/29/7/1356.full SO - J Rheumatol2002 Jul 01; 29