1. 1Pediatric Hematology/Oncology, Dr von Hauner University Children's Hospital, Munich, Germany
2. 2Staburo GmbH, Munich, Germany
3. 3Lydia Becker Institute of Immunology and Inflammation, The University of Manchester & Royal Manchester Children's Hospital, Manchester, United Kingdom
4. 4Children's Hospital, School of Medicine, Technical University Munich, Munich, Germany
5. 5Department of Pediatrics, Immunology, Infectious and Rare Diseases and Allergology, European Medical School, International European University, Kyiv, Ukraine
6. 6Department of Infection, Immunity and Inflammation, University of Leicester, Leicester, United Kingdom
7. 7Department of Hematology, Children's Hospital of Orange County, Orange, CA
8. 8Department of Pediatrics, Fondazione IRCCS San Gerardo dei Tintori, Monza, Italy
9. 9School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
10. 10Department of Pediatrics, Pediatric Infectious Diseases, Immunology and Allergology, Shupyk National Healthcare University of Ukraine, Kyiv, Ukraine
11. 11Department of Pediatrics, Faculty of Medicine, Comenius University, Bratislava, Slovakia
12. 12Department of Allergy and Immunology, The Royal Children's Hospital, Melbourne, Australia
13. 13Department of Pediatric Oncology and Hematology, Institute of Pediatrics, Jagiellonian University Medical College, Krakow, Poland
14. 14Helios Kliniken Krefeld, Children's Hospital, Krefeld, Germany
15. 15St James's Hospital & School of Medicine, Trinity College, Dublin, Ireland
16. 16Department of Pediatric Hematology/Oncology, Koç University School of Medicine, İstanbul, Turkey
17. 17Department of Pediatrics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
18. 18Pediatric Immunohematology and Stem Cell Program, San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, Italy
19. 19Department of Pediatric Hematology and Oncology, Charles University and University Hospital Motol, Prague, Czech Republic
20. 20Department of NEUROFARBA, Section of Child’s Health, University of Florence, Florence, Italy
21. 21Department of Haematology-Oncology, Anna Meyer University Children's Hospital (AOU Meyer IRCCS), Florence, Italy
22. 22Translational and Clinical Research Institute, Newcastle University, and Paediatric Stem Cell Transplant Unit, Great North Children's Hospital, Newcastle upon Tyne, United Kingdom
23. 23Department of Pediatrics, The University of Alabama at Birmingham, Birmingham, AL
24. 24Department of Pediatrics, Primary Immunodeficiencies Unit, Research Institute, Hospital 12 Octubre, School of Medicine, Complutense University of Madrid, Madrid, Spain
25. 25Department for Children and Adolescents, Pediatric Hematopoietic Stem Cell Transplantation and Immunodeficiency, Copenhagen University Hospital Rigshospitalet, København, Denmark
26. 26Department of Pediatrics, Kuopio University Hospital, Kuopio, Finland
27. 27Department of Pediatrics and Adolescent Medicine, Oulu University Hospital and Research Unit of Clinical Medicine, University of Oulu, Oulu, Finland
28. 28Division of Pediatric Hematology and Oncology, Department of Pediatrics, Turku University Hospital, Turku, Finland
29. 29Department of Child Health and Development, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
30. 30Division of Pediatric Immunology, Department of Pediatrics, Ege University, The Medical School, Izmir, Turkey
31. 31Pediatric Immunology and Rheumatology, Bursa Uludag University School of Medicine, Bursa, Turkey
32. 32Department of Paediatrics, Haematology and Oncology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University, Toruń, Poland
33. 33Russian Children’s Clinical Hospital, Pirogov National Research Medical University, Moscow, Russia
34. 34Department of Pediatrics, University Hospitals Leuven, Leuven, Belgium
35. 35Azerbaijan Medical University, Baku, Azerbaijan
36. 36Medical Direction, Children’s Hospital, ASST Spedali Civili, Brescia, Italy
37. 37Department of Immunology, Mother and Child Health Care Institute of Serbia, Belgrade, Serbia
38. 38Centre de référence des déficits immunitaires primitifs CEREDIH, CHU d'Angers, Angers, France
39. 39Department of Translational Medical Science, Section of Pediatrics, Federico II University, Napoli, Italy
40. 40Clinical Immunology, John Radcliffe Hospital, Oxford, United Kingdom
41. 41Department of Pediatrics, University Medical Center Ulm, Ulm, Germany
42. 42Allergy and Immunology Division, Pediatrics Department, Universidade Federal de Uberlândia, Uberlândia, Brazil
43. 43Dmitry Rogachev National Research and Clinical Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia
44. 44Hematologic Malignancies Branch, Office of Therapeutic Products, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD
45. 45Pediatric Infectious Diseases and Immunodeficiencies Unit, Children's Hospital, Vall d'Hebron Barcelona Hospital Campus, Barcelona, Spain
46. 46Bone Marrow Transplantation Department, Hadassah-Hebrew, University Medical Center, Jerusalem, Israel
47. 47Department of Pediatric Immunology and Infectious Diseases, University Medical Centre Utrecht, Utrecht, The Netherlands
48. 48Children’s Hospital, University of Helsinki and Helsinki University Hospital, Pediatric Research Center, Helsinki, Finland
49. 49Department of Immunology, Children's Memorial Health Institute, Warsaw, Poland
50. 50School of Women's & Children's Health, University of New South Wales, Sydney, Australia
51. 51Department of Rheumatism and Immunology, Children's Hospital of Chongqing Medical University, Chongqing, China
52. 52Vita-Salute San Raffaele University, Milan, Italy
53. 53University of Washington School of Medicine, Seattle, WA