1. Department of Radiation Oncology and Molecular Radiation Sciences; Johns Hopkins School of Medicine; Baltimore MD
2. Department of Radiation Oncology; University of Washington; Seattle WA
3. Department of Radiation; Grupo de Apoio ao Adolescente e à Criança com Câncer; São Paulo Brazil
4. Department of Radiation Oncology; Universität Klinik Für Strahlentherapie und Strahlenbiologie; Vienna Austria
5. Department of Radiation Oncology; Massachusetts General Hospital; Boston MA
6. Department of Radiotherapy; Federal Scientific Clinical Centre of Children's Hematology, Oncology and Immunology; Moscow Russia
7. Department of Oncology; Uppsala University Hospital; Uppsala Sweden
8. Department of Radiation Oncology; Centro Infantil Boldrini; São Paulo e Região Brazil