Clinical features and perforin A91V gene analysis in So-JIA children with macrophage activation syndrome703322HUASONG, ZXIANGYUAN, CAuthor informationDepartment of Allergy, Immunology and Rheumatology, Guangzhou Children's Hospital, Guangzhou Women and Children's Medical Center, Guangzhou, ChinaInternational Journal of Rheumatic Diseases 15:p 124, September 2012.Copyright © 2012 John Wiley & Sons, Inc.