1. Department of Hematology/OncologyUniversity Children's Hospital BaselBasel Switzerland
2. Department of HematologyUniversity Hospital BaselBasel Switzerland
3. Carmen and Ann Adams Department of Pediatrics, Division of Hematology/OncologyChildren's Hospital of Michigan, Wayne State UniversityDetroit Michigan
4. Clinical Trial Unit, University Hospital BaselBasel Switzerland
5. Chairperson Intercontinental Cooperative ITP Study Group (ICIS)Basel Switzerland
6. Hematology/Oncology, Hospital del Niño de San Justo, San JustoBuenos Aires Argentina
7. Pediatric Hematology and OncologyPediatric Hospital Ain Shams UniversityCairo Egypt
8. Department of Hemalogy‐Oncology Pedro de ElizaldeChildren Hospital Buenos AiresBuenos Aires Argentina
9. Department of HaematologyRoyal Manchester Children's HospitalManchester United Kingdom
10. Department of Pediatric Hematology and OncologyCharité Berlin Germany
11. Servicio de Pediatria Hospital Alejandro Posadas Buenos AiresBuenos Aires Argentina
12. Department of Cell Therapy and HematologySan Bortolo HospitalVicenza Italy
13. Hematology DepartmentSan Bortolo HospitalVicenza Italy
14. Hematology Unit, Schneider Children's Medical Center of Israel, Petah Tikva, Sackler Faculty of MedicineTel Aviv UniversityTel Aviv Israel
15. Department of Clinical ResearchBelarusian Research Center of Pediatric Oncology, Hematology and ImmunologyMinsk Belarus
16. Hematology Oncology Center, Beijing Children's Hospital CapitalBeijing China