1. Departments of Pediatric Oncology, Biostatistics, and Computational Biology, Dana-Farber Cancer Institute, Boston, MA;
2. Division of Hematology/Oncology, Children's Hospital Boston, MA;
3. Massachusetts General Hospital, Boston;
4. Boston University School of Medicine, MA;
5. Division of Pediatric Oncology, University of Rochester Medical Center, NY;
6. Division of Pediatric Hematology/Oncology, McMaster University, Hamilton, ON;
7. Division of Pediatric Oncology, San Jorge Children's Hospital, San Juan, Puerto Rico;
8. Division of Pediatric Hematology/Oncology, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, NY;
9. Division of Pediatric Oncology, Columbia University Medical Center, Morgan Stanley Children's Hospital of New York-Presbyterian, NY;
10. Division of Hematology and Oncology, Hospital Sainte-Justine, University of Montreal, Montreal, QC;
11. Division of Hematology-Oncology, Centre Hospitalier Université de Quebec, Quebec City, QC;
12. Inova Fairfax Hospital for Children, Falls Church, VA;
13. Division of Pediatric Hematology-Oncology, Hasbro Children's Hospital, Warren Alpert Medical School of Brown University, Providence, RI; and
14. Department of Pediatrics, Stanford University School of Medicine, Palo Alto, CA