1. Yale University School of Medicine; New Haven Connecticut
2. Department of Paediatric Oncology; Royal Victoria Infirmary, Newcastle Upon Tyne Hospitals Trust; Newcastle Upon Tyne United Kingdom
3. Children's Oncology Group; Monrovia California
4. University of Southern California; Los Angeles California
5. Gynecologic Oncology Group Statistics and Data Center, Roswell Park Cancer Institute; Buffalo New York
6. Dana-Farber Cancer Institute and Boston Children's Hospital; Boston Massachusetts
7. Cambridge University Hospitals NHS Foundation Trust; Cambridge United Kingdom
8. Riley Hospital for Children; Indianapolis Indiana
9. Children's and Young Persons Cancer Services; University College London Hospital Trusts; London United Kingdom
10. Birmingham Children's Hospital NHS Foundation Trust; Birmingham United Kingdom
11. Aflac Cancer Center, Children's Healthcare of Atlanta; Emory University; Atlanta Georgia
12. Leeds Institute of Cancer Studies and Pathology; Leeds Institute of Oncology and St. James's University Hospital; Leeds United Kingdom
13. University of Toronto; Toronto Canada
14. University of Texas Southwestern Medical Center; Dallas Texas
15. Children's Medical Center; Dallas Texas
16. The University of Texas MD Anderson Cancer Center; Houston Texas