1. St Mary's Hospital Campus of Imperial College Faculty of Medicine; St Mary's Hospital; Praed Street London W2 1NY United Kingdom
2. Department of Haematology; Imperial College Healthcare NHS Trust, St Mary's Hospital; Praed Street London W2 1NY United Kingdom
3. Department of Paediatric Haematology; Great Ormond Street Hospital for Children; Great Ormond Street London WC1N 3JH United Kingdom