1. Department of Pediatrics; Xiangya Hospital, Central South University; Changsha Hunan China
2. Department of Pediatrics; Second Xiangya Hospital, Central South University; Hunan China
3. Department of Pediatrics; First Affiliated Hospital, Sun Yat-Sen University; Guangzhou China
4. Department of Hematology; Hunan Childdren's Hospital; Changsha Hunan China
5. Department of Pediatrics; Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University; Guangzhou China
6. Department of Pediatrics; Zhujiang Hospital, Southern Medical University; Guangzhou China
7. Department of Hematology and Oncology; Shenzhen Children's Hospital; Shenzhen China
8. Department of Pediatric Hematology; Fujian Medical University Union Hospital; Fuzhou Fujian China
9. Department of Pediatrics; Third Affiliated Hospital, Sun Yat-Sen University; Guangzhou China
10. Department of Pediatrics; Sun Yat-Sen University Cancer Center; Guanzhou China
11. Department of Pediatrics; Huizhou Municipal Central Hospital; Huizhou Guangdong China
12. Department of Pediatrics; First People's Hospital of Huizhou; Huizhou Guangdong China
13. Department of Pediatrics; Nanfang Hospital, Southern Medical University; Guangzhou China
14. Clinical Trials Unit, First Affiliated Hospital, Sun Yat-Sen University; Guangzhou China