1. Departments of Pediatrics and Biostatistics; Institut Gustave Roussy; Villejuif France
2. Departments of Pediatric Orthopedic Surgery; British Columbia Children's Hospital; Vancouver British Columbia
3. Department of Pediatrics, Division of Hematology/Oncology; University Hospital of Padova; Padova Italy
4. Pediatric 5 (Oncology, Hematology, Immunolgy); Olga Hospital; Klinikum Stuttgart Germany
5. Department of Paediatric Oncology; Bristol Royal Hospital for Children; Bristol UK
6. Division of Hematology/Oncology, Seattle Children's Hospital, Fred Hutchinson Cancer Research Center; University of Washington; Seattle Washington
7. Department of Pediatric Hematology/Oncology; University of Oklahoma Health Science Center; Oklahoma City Oklahoma
8. Radiation Oncology; Kaiser Permanente-Oakland; Oakland California
9. Department of Preventive and Societal Medicine; University of Nebraska Medical Center; Omaha Nebraska