1. Our Lady's Children's Hospital Dublin Ireland
2. University of the Witwatersrand Faculty of Health Sciences Johannesburg South Africa
3. Addenbrookes Hospital Cambridge UK
4. Children's Hospital Los Angeles University of Southern California Keck School of Medicine Los Angeles CA USA
5. Great Ormond Street Hospital London UK
6. Puget Sound Blood Center Seattle WA USA
7. Basingstoke and North Hampshire Hospital Basingstoke UK
8. Lady Cilento Children's Hospital Brisbane Qld Australia
9. Ogikubo Hospital Tokyo Japan
10. Barts and the London Comprehensive Care Center London UK
11. Medizinsche Universitat Wien Vienna Austria
12. St Paul's Hospital Vancouver BC Canada
13. Biogen Cambridge MA USA