1. U.S. Army Medical Research and Materiel Command; Fort Detrick Maryland
2. Department of Biostatistics; Colleges of Medicine and Public Health & Health Professions; University of Florida; Gainesville Florida
3. Texas Children's Cancer Center; Baylor College of Medicine; Houston Texas
4. Childrens Hospital Colorado; University of Colorado School of Medicine; Aurora Colorado
5. Division of Pediatric Hematology/Oncology; University of Texas Southwestern School of Medicine; Dallas Texas
6. Division of Haematology/Oncology; The Hospital for Sick Children; Toronto Ontario Canada
7. Department of Pediatrics and Huntsman Cancer Institute; University of Utah; Salt Lake City Utah
8. Department of Pediatrics; University of California; San Francisco California
9. Children's Oncology Group Statistics and Data Center University of Florida; Gainesville; Florida
10. Interfant Trial Data Center; Pediatric Clinic; University of Milano-Bicocca; Monza Italy
11. Department of Health Sciences; University of Milano Bicocca; Monza Italy
12. Princess Maxima Center for Pediatric Oncology; Utrecht; Pediatric Oncology; Erasmus MC - Sophia Children's Hospital; Rotterdam Netherlands
13. New York University Cancer Institute; New York; New York
14. Oncology and Pediatrics; Johns Hopkins University; Baltimore Maryland