1. Molecular and Cellular Immunology Unit, UCL Great Ormond Street Institute of Child Health, University College London, London, United Kingdom.
2. Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA.
3. Great Ormond Street Hospital for Children, NHS Foundation Trust, London, United Kingdom.
4. Department of Histopathology, Great Ormond Street Hospital for Children, NHS Foundation Trust, London, United Kingdom.
5. Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
6. Division of Hematology/Oncology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
7. Orchard Therapeutics, London, United Kingdom.