1. Department of Pediatrics, University Medical Center Ulm, Ulm, Germany;
2. Biotherapy Clinical Investigation Center, Hôpital Necker Enfants Malades, Paris, France;
3. Institute for Transfusion Medicine, University of Ulm, Ulm, Germany;
4. Institute for Clinical Transfusion Medicine and Immunogenetics Ulm, German Red Cross Blood Service Baden-Wuerttemberg – Hessen, Ulm, Germany;
5. Division of Immunology, Boston Children’s Hospital, Boston, MA;
6. Department of Pediatrics, University Hospital, Brescia, Italy;
7. Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom;
8. Department of Paediatric Immunology and Haematopoietic Stem Cell Transplant (HSCT), Great North Children´s Hospital, Newcastle upon Tyne, United Kingdom;
9. Division of Allergy, Immunology and Bone Marrow Transplant (BMT), UCSF Benioff Children´s Hospital, San Francisco, CA;
10. Pediatric Hematology-Oncology, Hadassah University Hospital, Jerusalem, Israel;
11. Section of Pediatric Allergy/Immunology, Department of Pediatrics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia;
12. Department of Pediatrics, Allergy, Immunology and BMT, King Saud Bin Abdulaziz University for Health Sciences, King Abdulaziz Medical City, Jeddah, Saudi Arabia;
13. Division of Hematology-Oncology, Boston Children’s Hospital, Boston, MA;
14. Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA;
15. Department of Pediatrics, Faculty of Medicine, Kuwait University, Kuwait City, Kuwait;
16. UCL Great Ormond Street Institute of Child Health, London, United Kingdom;
17. Great Ormond Street Hospital for Children NHS Trust, London, United Kingdom;
18. Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan;
19. Department of Community Pediatrics, Perinatal and Maternal Medicine, Tokyo Medical and Dental University, Tokyo, Japan;
20. Department of Cell Transplantation and Regenerative Medicine, Tokai University School of Medicine, Isahara, Japan;
21. Department of Allergy and Immunology, Section of Immunology, Allergy and Rheumatology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX;
22. Department of Pediatric Immunology, University Medical Center Utrecht, Utrecht, The Netherlands;
23. Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany;
24. Pediatric Infectious Diseases and Immunodeficiencies Unit, Hospital Universitari Vall d´Hebron, Barcelona, Spain;
25. Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan;
26. Department of Pediatrics, Prince Sultan Military Medical City, Riyadh, Saudi Arabia; and
27. Paediatric Immunology, Haematology and Rheumatology, Assistance Publique – Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Paris, France