1. Department of Pediatric Hematology‐Oncology Erasmus MC Sophia Children's Hospital Rotterdam the Netherlands
2. Division of Hematology University Children's Hospital Zurich Switzerland
3. Department of Pediatrics McMaster University Hamilton Ontario Canada
4. Servicio de Hematología y Oncología Hospital de Pediatría Prof. Dr. Juan P. Garrahan Buenos Aires Argentina
5. Department of Pediatrics University of Colorado Anschutz Medical Campus Denver Colorado USA
6. Department of Hematology Royal Hospital for Children Glasgow UK
7. Departments of Pediatrics and Medicine Division of Hematology Johns Hopkins University School of Medicine Baltimore Maryland USA
8. Thrombosis and Stroke Programs Johns Hopkins All Children's Hospital, and Johns Hopkins All Children's Institute for Clinical and Translational Research St. Petersburg Florida USA
9. Department of Pediatric Hematology‐Oncology Charité Berlin Germany
10. Department of Pediatrics Hematology Research Group Murdoch Children's Research Institute The University of Melbourne Melbourne Australia
11. Department of Clinical Hematology The Royal Children's Hospital Melbourne Australia
12. Department of Pediatric Hematology‐Oncology Münster and Institute of Clinical Chemistry University Hospital Kiel‐LübeckUniversity of Münster Kiel Germany
13. Pediatric Hematology/Oncology Unit Shaare‐Zedek Medical Center Hebrew University Jerusalem Israel
14. Department of Pediatrics Faculty of Medicine Ramathibodi Hospital Mahidol University Bangkok Thailand
15. Department of Pediatrics Medical University of Vienna Vienna Austria