1. Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
2. Department of Rheumatology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
3. Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China