1. Whittington Hospital London UK
2. Centre for Genomics and Child Health Blizard Institute Queen Mary University of London London UK
3. Birmingham Children's Hospital Birmingham UK
4. Birmingham City Hospital Birmingham UK
5. Royal Manchester Children's Hospital Manchester UK
6. Bradford Royal Infirmary Bradford UK
7. Royal Hospital for Children Glasgow UK
8. University Hospital of Wales Cardiff UK
9. OPEN Health Marlow UK
10. bluebird bio Cambridge Massachusetts USA
11. bluebird bio UK Basingstoke UK
12. Manchester Royal Infirmary Manchester UK