| Affiliation: | 1. Pediatric Hematology and Oncology Center, , Rabat, Morocco;2. Medical and Pharmacy School, , Rabat, Morocco;3. Laboratory of Biostatistics, Clinical Research and Epidemiology, Medical and Pharmacy School, , Rabat, Morocco;4. Hospital 20 Aout Pediatric, Hematology and Oncology Center, , Casablanca, Morocco;5. Radiation Therapy Center, Ibn Rochd Hospital, , Casablanca, Morocco;6. National Institute of Oncology, INO BP 6213 RI, , Rabat, Morocco;7. St. Jude Children's Research Hospital, , Memphis, Tennessee |
