1. Department of Pediatrics, Institute of Pediatric Research, Children's Hospital of Soochow University, P.R. China
2. Department of Pediatrics, Fujian Provincial Hospital, Fujian Provincial Clinical College of Fujian Medical University, Fuzhou, P.R. China
3. Department of Hematology and Rheumatology, the First Affiliated Hospital of Fujian Medical University, Fuzhou, P.R. China