1. Hematology Oncology Center; Beijing Children's Hospital; Capital Medical University; Beijing China
2. Beijing Key Laboratory of Pediatric Hematology Oncology; National Key Discipline of Pediatrics; Ministry of Education; Beijing China
3. Department of Hematology; Nanfang Hospital; Southern Medical University; Guangzhou China
4. Department of Pediatrics; Peking Union Medical College Hospital; Chinese Academy of Medical Sciences; Peking Union Medical College; Beijing China
5. Thrombosis & Hemostasis center; Institute of Hematology; Blood Diseases Hospital Chinese Academy of Medical Sciences; Peking Union Medical College; Tianjin China
6. Department of Hematology; Wuhan Union Medical College Hospital; Huazhong University of Science and Technology; Wuhan China
7. Department of Hematology; Hemophilia clinic; Peking Union Medical College Hospital; Chinese Academy of Medical Sciences; Peking Union Medical College; Beijing China
8. Department of Pediatrics; Laboratory Medicine and Pathology; Division of Hematology and Oncology; Children Hospital of Eastern Ontario; University of Ottawa; Ottawa ON Canada
9. Departments of Medicine, Pediatrics and Oncology; Foothills Hospital; Alberta Health Services; University of Calgary and Southern Alberta Rare Blood and Bleeding Disorders Comprehensive Care Program; Calgary AB Canada
10. Division of Hematology/Oncology; The Hospital for Sick Children; Toronto ON Canada
11. Department of Pediatrics; University of Toronto; Toronto ON Canada
12. School of Rural and Northern Health and the Research Centre for Evaluating Children's Health Outcomes (ECHO); Laurentian University; Sudbury ON Canada