1. Department of Oncohematology, Juan Manuel Márquez Pediatric Hospital, Havana, Cuba.
2. Center of Molecular Immunology, Havana, Cuba.
3. Department of Radiotherapy, National Institute of Oncology and Radiobiology, Havana, Cuba.
4. Department of Neuroradiology, National Institute of Neurology and Neurosurgery, Havana, Cuba.
5. Department of Radiology, Juan Manuel Márquez Pediatric Hospital, Havana, Cuba.
6. Department of Neurosurgery, Juan Manuel Márquez Pediatric Hospital, Havana, Cuba.