PT - JOURNAL ARTICLE AU - ZENG HUASONG AU - WEI PING AU - CHEN XIANGYUAN AU - WEI YANDAN TI - Clinical Features and Perforin A91V Gene Analysis in 31 Patients with Macrophage Activation Syndrome and Systemic Juvenile Idiopathic Arthritis in China AID - 10.3899/jrheum.121040 DP - 2013 Jul 01 TA - The Journal of Rheumatology PG - 1238--1239 VI - 40 IP - 7 4099 - http://www.jrheum.org/content/40/7/1238.short 4100 - http://www.jrheum.org/content/40/7/1238.full SO - J Rheumatol2013 Jul 01; 40