1. Pediatric Oncology Department Instituto Nacional de Enfermedades Neoplásica Lima Perú
2. Pediatrics Department Nationwide Children's Hospital Columbus Ohio USA
3. Division of Hematology, Oncology, Blood and Marrow Transplant Department Nationwide Children's Hospital and The Ohio State University Columbus Ohio USA
4. Radiotherapy Department Instituto Nacional de Enfermedades Neoplasicas Lima Perú
5. Pathology Department Instituto Nacional de Enfermedades Neoplasicas Lima Perú
6. Neurosurgery Department Instituto Nacional de Enfermedades Neoplasicas Lima Perú
7. Radiology Department Instituto Nacional de Enfermedades Neoplasicas Lima Perú
8. Neurology Unit Instituto Nacional de Enfermedades Neoplasicas Lima Perú