1. Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, United Kingdom;
2. Princess Margaret Cancer Centre, University Health Network, Toronto, and Department of Molecular Genetics, University of Toronto, Toronto, Canada;
3. Division of Hematology, School of Medicine, University of Utah, Salt Lake City, UT;
4. Department of Paediatrics, Kuopio University Hospital, Kuopio, Finland;
5. Division of Infectious Diseases, Helsinki University Central Hospital, Helsinki, Finland;
6. Department of Clinical Immunology and
7. Department of Haematology, Central Manchester University Hospitals, Manchester, United Kingdom;
8. University of Florence, Department of “NEUROFARBA”: Section of Child's Health/“Anna Meyer” Children's Hospital, Department of Haematology-Oncology, Florence, Italy;
9. Faculty of Medicine, School of Health Sciences, University of Iceland and Department of Infectious Diseases, Landspitali University Hospital, Reykjavik, Iceland;
10. Cambridge Institute for Medical Research, Cambridge, United Kingdom;
11. UCL Institute of Immunity and Transplantation, University College, London, United Kingdom;
12. Department of Hepatology and
13. Department of Clinical Immunology, University Hospital of Birmingham, Birmingham, United Kingdom;
14. Department of Immunology, University Hospital of Wales, Cardiff, United Kingdom;
15. Northern Centre for Cancer Research, Newcastle University, Newcastle upon Tyne, United Kingdom;
16. Centre for Infectious Medicine, Karolinska Institute, Stockholm, Sweden; and
17. Department of Pediatrics, Texas Children’s Cancer Center, Houston, TX