1. Centre for Genomics and Child Health, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom;
2. Department of Paediatric Haematology, Imperial College Healthcare National Health Service Trust, St. Mary’s Hospital, London, United Kingdom;
3. Paediatric Haematology-Oncology Unit, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia;
4. Department of Genetics, Spectrum Health, Grand Rapids, MI;
5. Paediatric Haematology Unit, Schneider Children’s Hospital, Medical Center of Israel, Petach Tikvah, Israel; and
6. Barts Health, London, United Kingdom